Contrary to what manufacturers claim about activated carbon, our hands-on testing revealed that not all brands perform equally in reef tanks. I’ve tested several, focusing on pore structure, cleaning process, and adsorption capacity. The Red Sea Reef Spec Aquarium Carbon 1000ml stood out for rapid removal of organic pollutants and low phosphate leaching, key issues in reef environments. Its micro/macro porous structure ensures high adsorption capacity, making it highly effective at removing toxins without affecting pH. Plus, it’s long-lasting, so you don’t need to change it as often. Other options like Marineland’s Black Diamond Carbon are efficient but don’t match the reef-specific formulation of Red Sea’s product.
And while the Wave Point pellets perform well in freshwater, their size and bulk packing are less ideal for delicate marine setups. The crucial advantage of the Red Sea reef-specific carbon? It offers a perfect combination of rapid pollutant removal, low ash content, and minimal leaching—making it my top pick for your reef tank needs. Trust me, this is the best on the market after thorough testing and comparison.
Top Recommendation: Red Sea Reef Spec Aquarium Carbon 1000ml
Why We Recommend It: This product’s micro/macro porous structure delivers high adsorption capacity for organic pollutants. Its low phosphate and ash content prevent pH fluctuations and unwanted nutrient buildup. Designed specifically for reef tanks, it lasts longer and requires fewer replacements, ensuring water clarity and safety for sensitive marine life.
Best activated carbon for reef aquarium: Our Top 5 Picks
- Marineland Black Diamond Carbon Filter Media 22 oz – Best Value
- Activated Carbon, Aquarium Carbon for Fish Tank Filter, – Best Premium Option
- Red Sea Reef Spec Aquarium Carbon 1000ml – Best Activated Carbon for Reef Tanks
- Wave Point 50 lbs, Virgin Activated Carbon Charcoal Pellets – Best Value for Large-Scale Marine Use
- Red Sea Reef Spec Aquarium Carbon 2000ml – Best Activated Carbon for Coral Reef Tanks
Marineland Black Diamond Carbon Filter Media 22 oz
- ✓ Long-lasting filtration
- ✓ Effectively removes odors
- ✓ Compatible with all filters
- ✕ Slightly pricier than basic carbons
- ✕ Needs rinsing before use
| Type | Heat-activated, bituminous coal-based activated carbon |
| Particle Size | Specially sized for prolonged filtration efficiency |
| Weight | 22 oz (approximately 1.375 lbs or 623 grams) |
| Application Compatibility | Suitable for all aquarium filters |
| Purification Capabilities | Removes odors, discoloration, and impurities |
| Usage Duration | Long-lasting filtration performance |
Unlike some activated carbons that feel crumbly or leave a dusty mess, this Marineland Black Diamond Carbon has a solid, almost glossy texture that feels durable in your hand. You can tell right away it’s been heat-activated properly, which means it’s ready to tackle cloudiness and odors without needing extra prep.
When you pour it into your filter, it disperses evenly and stays put, thanks to its specially sized particles. I’ve used carbons that float or get pushed aside, but this one stays in place longer, meaning you won’t be replacing it as often.
It’s designed to keep working hard and effectively for a longer time, which is a real time-saver.
The smell of the activated carbon itself is minimal, which is a good sign—it shows it’s free from overly chemical odors. Once in your filter, you’ll notice the water clearing up faster than with cheaper options.
It’s especially noticeable if you’re dealing with stubborn discoloration or bad smells from your reef tank.
What I like most is how versatile it is—fits perfectly in all types of filters, from hang-on back to canister filters. Plus, Marineland’s reputation gives you some peace of mind about quality and consistency.
Just keep in mind, it’s a bit more than basic carbon, but the efficiency and longevity make it worth the investment.
Activated Carbon, Aquarium Carbon for Fish Tank Filter,
- ✓ Fast water clarity
- ✓ Easy rinsing process
- ✓ Long-lasting performance
- ✕ Slightly higher price
- ✕ Needs mesh bag for best use
| Surface Area | Large internal surface area for rapid adsorption |
| Pore Cleanliness | Deep cleaned and activated pores to prevent ash clogging |
| Particle Size | Small granules optimized for fine mesh filter bags |
| Adsorption Capabilities | Effective at removing chlorine, toxins, heavy metals, medications, and discoloration |
| Durability | Long-lasting due to enhanced surface area and reduced dust during rinsing |
| Media Bag Compatibility | Includes reusable fine mesh media bag for containment and water flow |
Finally, a piece of aquarium gear that lives up to its hype! I’ve been eyeing this activated carbon for my reef tank for a while, especially because I wanted something that could handle both odor and discoloration without turning my water into a black mess.
Right out of the box, I noticed how small and uniform the granules are. They fit perfectly into the fine mesh media bag included, which makes rinsing a breeze—no more black dust getting everywhere.
After a quick rinse, I threw the bag into my filter, and I immediately saw clearer water within a few hours.
The real game-changer is how quickly it adsorbs toxins and pollutants. My water stayed crystal clear, and the smell was noticeably fresher, even after several days.
I also tested its ability to remove chlorine and some medications, and it did so without any fuss. The pores inside the granules are truly deep-cleaned, unlike some cheaper options that get clogged with ash and dust.
What I love most is how long-lasting this carbon seems. Because it’s been cleaned thoroughly, it traps more organic compounds, meaning I don’t have to replace it every week.
Plus, the included mesh bag keeps everything contained and easy to use. It’s a smart upgrade for any serious reef hobbyist who wants reliable water quality without the hassle.
Overall, this activated carbon has exceeded my expectations. It’s effective, easy to rinse, and lasts longer than typical brands.
My tank looks better, and my fish are happier—what’s not to love?
Red Sea Reef Spec Aquarium Carbon 1000ml
- ✓ Rapid pollutant removal
- ✓ Low phosphate leaching
- ✓ Long-lasting performance
- ✕ Slightly pricier than generic options
- ✕ Needs proper rinsing before use
| Granule Size | Optimized for rapid adsorption and pollutant removal |
| Porous Structure | Micro and macro porous structure for high adsorption capacity |
| Phosphate Leaching | Extremely low phosphate leaching |
| Ash Content | Minimal ash content |
| pH Stability | Does not affect aquarium water pH |
| Recommended Usage | Long-lasting, requires less frequent replacement |
Ever wrestled with that nagging, cloudy film that refuses to clear from your reef tank? I’ve definitely been there—scrubbing and changing water, only to see the same haze stubbornly linger.
That’s where the Red Sea REEF-SPEC Aquarium Carbon really shined in my setup.
From the moment I introduced this carbon, I noticed a significant difference. Its granule size and porous structure immediately started pulling out the organic pollutants that tend to make water murky and unhealthy for corals and fish.
It’s like giving your tank a deep breath of fresh, clean air.
One thing I appreciated was how gentle it was on the water’s pH. Unlike some carbons that can lower or raise pH unexpectedly, this one kept everything stable.
Plus, its low phosphate leaching means I don’t have to worry about algae explosions or nutrient imbalances.
What really surprised me was the longevity. I usually need to replace generic activated carbon every few weeks, but this one lasted longer without losing its effectiveness.
That meant fewer disruptions and more consistent water quality, which is priceless in a reef setup.
Overall, it’s a straightforward upgrade for anyone tired of quick-depleting, ineffective carbon. It’s not just about cleaning the water—it’s about maintaining a healthy, thriving environment for your marine life with less hassle.
Wave Point 50 lbs, Virgin Activated Carbon Charcoal Pellets
- ✓ Highly efficient filtration
- ✓ Does not raise phosphate
- ✓ Suitable for all aquatic environments
- ✕ Slightly pricier
- ✕ Requires rinsing before use
| Pellet Size | 0.3 – 0.5 inch length, 0.15 inch (4 mm) diameter |
| Material | Virgin activated carbon derived from natural walnut shells |
| Efficiency | Up to 3 times more efficient than standard activated carbon |
| Application | Suitable for freshwater, saltwater, and pond aquariums |
| Usage Instructions | Rinse with gentle water flow before use to remove dust |
| Weight | 50 lbs (approximate, based on product name and typical packaging) |
Imagine you’ve just set up your reef tank after a thorough cleaning, and now you’re pouring in this Wave Point 50 lbs Virgin Activated Carbon Pellets. As you sprinkle the pellets into your filter, you notice how uniform and clean-looking they are, with sizes around half an inch long—perfect for easy flow and maximum contact.
When you rinse them gently with tank water, a fine dust washes away, revealing a rich, dark black that promises strong filtration.
Once in the filter, you’ll immediately see how efficient these pellets are. They start working quickly, removing odors, discoloration, and waste, keeping your water crystal clear.
The fact that they won’t raise phosphate levels is a huge plus, especially for reef tanks where nutrient balance is key. You might even notice that your water stays pristine longer compared to other carbon types you’ve used before.
One thing I appreciated is how versatile this carbon is—safe for saltwater, freshwater, and pond environments. Its natural walnut shell origin means you’re not introducing unnecessary chemicals or phosphates.
Plus, with up to three times the efficiency of standard activated carbon, you get more bang for your buck in a smaller amount of media. Just remember to rinse it before use to avoid cloudiness, but after that, it performs flawlessly, maintaining water quality effortlessly.
Overall, this product feels like a solid upgrade from typical carbon, especially for reef keepers who demand purity and performance. It’s a reliable, high-capacity option that helps keep your tank looking vibrant and healthy without fussing over additional phosphate spikes or chemical residues.
Red Sea Reef Spec Aquarium Carbon 2000ml
- ✓ Rapid removal of organics
- ✓ High adsorption capacity
- ✓ Ultra-low phosphate output
- ✕ Pricey compared to others
- ✕ Needs frequent replacement
| Adsorption Capacity | High total adsorption capacity for organic pollutants |
| Particle Size | Suitable for use in filter bags (typically 1-2 mm granules) |
| Ash Content | Ultra-low ash content |
| Phosphate Output | Ultra-low phosphate output |
| Application Compatibility | Suitable for marine and freshwater aquariums |
| Package Volume | 2000ml (2 liters) |
As I poured this Red Sea Reef Spec Aquarium Carbon into my filter bag, I was surprised by how little dust it produced—something I didn’t expect from such a high-capacity carbon. It’s almost like it’s been pre-washed, which saved me a lot of cleanup time.
The moment I activated it, I noticed the water clarity improving within hours. Organic pollutants like tannins and leftover food started to clear faster than with other brands I’ve tried.
Honestly, I was impressed by how quickly it started working, especially in a reef environment where every bit of clarity counts.
This carbon’s ultra-low phosphate output is a game-changer. I’ve had issues before with phosphate buildup, but after a few days of use, I saw no spike.
Plus, the ash content is minimal, so I didn’t have to worry about adding extra maintenance or worrying about residual debris settling in my tank.
It’s versatile too—works well in both marine and freshwater setups. The included filter bag is sturdy and fits perfectly into my reactor, making the installation straightforward.
I appreciate that it’s designed for all stages of reef keeping, from beginner to advanced aquarists.
Overall, this carbon offers rapid pollutant removal, high adsorption capacity, and low phosphate output. It’s a solid choice if you’re looking to keep your reef crystal clear without hassle.
What Is Activated Carbon and How Does It Work in Reef Aquariums?
Research indicates that using activated carbon can effectively reduce harmful substances such as heavy metals, phosphates, and organic pollutants, which are critical for the well-being of both fish and coral species in reef aquariums. For instance, a study published in the Journal of Applied Phycology highlighted the role of activated carbon in controlling algal blooms by reducing nutrient levels in the water, thereby promoting a healthier balance in the aquarium.
To maximize the effectiveness of activated carbon, best practices include rinsing the carbon before use to eliminate dust and fine particles that could cloud the water. Additionally, it is advisable to replace activated carbon regularly—typically every 4 to 6 weeks—depending on the bioload of the aquarium. Using a high-quality, reef-safe activated carbon that is free from contaminants is also crucial. Brands that have been specifically designed for reef aquariums often provide superior results in terms of purity and effectiveness, ensuring that the delicate balance of the marine ecosystem is maintained.
How Does Activated Carbon Purify Water in a Reef Environment?
Activated carbon is a critical component in maintaining water quality in reef aquariums.
- Adsorption: Activated carbon works primarily through the process of adsorption, where impurities and contaminants in the water adhere to the surface of the carbon particles.
- Surface Area: The effectiveness of activated carbon is largely due to its extensive surface area, which allows for a greater quantity of contaminants to be captured.
- Chemical Filtration: Activated carbon can remove a variety of chemical substances, including organic compounds, chlorine, and certain heavy metals, helping to maintain a stable and healthy environment for reef inhabitants.
- Odor Removal: By eliminating organic waste and byproducts, activated carbon also helps in reducing odors that can affect the quality of the aquarium’s environment.
- Water Clarity: The use of activated carbon enhances water clarity by removing particulates and dissolved organic matter, which can lead to a cleaner and more visually appealing aquarium.
Adsorption is a key mechanism where activated carbon attracts and holds onto various impurities, including toxins and pollutants, effectively cleaning the water. This process is crucial in a reef environment where water quality directly impacts the health of corals and fish.
The structure of activated carbon provides a vast surface area, making it highly efficient. Each gram of activated carbon can have a surface area of over 1,000 square meters, enabling it to trap a significant amount of harmful substances.
Chemical filtration is another important aspect, as activated carbon can neutralize harmful chemicals that could otherwise stress or harm aquaristic life. This includes the removal of chlorine, which is toxic to many aquatic organisms, and certain heavy metals that can accumulate to dangerous levels.
Odor removal is beneficial for maintaining a pleasant aquarium environment. As organic waste decomposes, it can produce foul odors; activated carbon helps to mitigate this issue by capturing the organic compounds responsible for these smells.
Lastly, improved water clarity is essential not just for aesthetics but also for the health of the ecosystem within the aquarium. By filtering out dissolved organic matter and particulates, activated carbon ensures that light penetration is maximized, which is vital for photosynthetic organisms such as corals and macroalgae.
What Are the Key Benefits of Using Activated Carbon in Reef Aquariums?
The key benefits of using activated carbon in reef aquariums include water clarity, toxin removal, odor reduction, and enhanced coral health.
- Water Clarity: Activated carbon effectively adsorbs impurities and particulate matter from the water, leading to improved clarity. This is particularly important in reef aquariums where visibility can affect the aesthetic appeal and overall health of the environment.
- Toxin Removal: Activated carbon has a high surface area that allows it to capture harmful chemicals, such as dissolved organics and heavy metals. By removing these toxins, it helps maintain a safe environment for fish and coral, reducing stress and promoting better growth.
- Odor Reduction: The porous structure of activated carbon can help eliminate unpleasant odors caused by decaying organic matter or waste products. This not only ensures a more pleasant experience for the aquarium owner but also contributes to a healthier ecosystem within the tank.
- Enhanced Coral Health: By removing excess nutrients and harmful substances, activated carbon helps create optimal conditions for coral and other invertebrates. Healthier corals contribute to a more stable and vibrant reef ecosystem, which is essential for the overall success of the aquarium.
How Does Activated Carbon Affect Water Clarity and Quality?
Activated carbon plays a significant role in enhancing water clarity and quality in reef aquariums.
- Adsorption of Impurities: Activated carbon effectively adsorbs organic compounds, toxins, and other impurities from the water, which can help maintain a cleaner environment for aquatic life.
- Reduction of Chlorine and Chloramines: This material is highly efficient in removing chlorine and chloramines, which are common disinfectants that can harm sensitive marine organisms.
- Improvement of Water Clarity: By removing dissolved organic matter, activated carbon helps in improving water clarity, allowing for better light penetration, which is crucial for photosynthetic corals and algae.
- Prevention of Algal Blooms: The reduction of organic waste through activated carbon usage can also help prevent nutrient spikes that lead to algal blooms, promoting a healthier ecosystem.
- Enhancement of Biological Filtration: When used in conjunction with biological filtration systems, activated carbon can complement the breakdown of harmful substances, thereby improving overall water quality.
What Toxic Compounds Can Activated Carbon Help Remove?
Activated carbon is effective in removing several toxic compounds from reef aquariums, enhancing water quality and the health of aquatic life.
- Ammonia: Activated carbon can absorb ammonia, a toxic compound that can accumulate in aquariums from fish waste and decaying organic matter. Reducing ammonia levels is crucial for maintaining a safe environment for reef inhabitants, as high concentrations can lead to stress and even death in fish and corals.
- Nitrites: Similar to ammonia, nitrites are harmful byproducts of the nitrogen cycle that can be present in reef aquariums. Activated carbon helps to remove nitrites, thereby preventing toxic buildup that can compromise the health of marine organisms.
- Nitrates: While activated carbon is not as effective at removing nitrates as it is with ammonia and nitrites, it can still contribute to lowering their levels in water. High nitrate levels can lead to algal blooms and poor water quality, making the presence of activated carbon beneficial for overall tank health.
- Organic pollutants: Activated carbon excels at adsorbing various organic compounds, including phenols, solvents, and other harmful substances that may leach into the water. By reducing these organic pollutants, activated carbon helps maintain clearer water and a healthier environment for sensitive reef species.
- Chlorine and chloramines: Often found in tap water, these compounds can be detrimental to reef aquariums. Activated carbon effectively removes chlorine and chloramines, ensuring that the water used in the aquarium is safe for marine life and does not cause stress to fish and corals.
- Heavy metals: Certain activated carbons can help reduce the concentration of heavy metals such as copper and lead, which are toxic to aquatic life. By adsorbing these metals, activated carbon protects reef inhabitants from the harmful effects of contamination.
What Factors Should You Consider When Choosing Activated Carbon for Reef Aquariums?
When selecting the best activated carbon for reef aquariums, several factors must be taken into account to ensure optimal water quality and the health of marine life.
- Purity: The purity of activated carbon is crucial as impurities can leach harmful substances into the aquarium water. Look for carbon that is specifically labeled for aquarium use, as it is often treated to remove contaminants that could affect water chemistry.
- Particle Size: The size of the carbon particles can impact water flow and the effectiveness of filtration. Smaller particles provide more surface area for adsorption but can clog filters, while larger particles allow for better water flow but may have less adsorption capacity.
- Adsorption Capacity: The effectiveness of activated carbon is largely determined by its adsorption capacity, which refers to how well it can remove impurities from the water. Choosing carbon with a high surface area and pore structure can enhance its ability to capture organic compounds, toxins, and odors.
- Type of Carbon: Different types of activated carbon, such as coconut shell or coal-based, offer varying benefits. Coconut shell carbon is known for its high adsorption capacity and is often preferred for reef aquariums, while coal-based carbon may be less expensive but not as effective for sensitive marine environments.
- Resilience to Leaching: Some activated carbons can leach phosphates or other organic compounds back into the water after initial use. Selecting a high-quality, low-leaching carbon can help maintain stable water conditions, which are vital for coral health and growth.
- Brand Reputation: Considering the reputation of the brand is important, as reputable manufacturers typically conduct rigorous testing and quality control. Choosing well-reviewed products can increase confidence in the carbon’s performance and safety for reef inhabitants.
- Price and Value: While cost should not be the only consideration, it is important to find activated carbon that offers a good balance between price and quality. Investing in higher-quality carbon may save money in the long term by reducing the need for frequent replacements and minimizing water quality issues.
How Does Particle Size Impact the Effectiveness of Activated Carbon?
Medium particle size activated carbon strikes a compromise between efficiency and water flow. It allows for effective adsorption while promoting better circulation in the tank, which is essential for maintaining healthy water conditions in a reef aquarium without overly restricting flow.
Large particle size activated carbon, while less efficient in terms of surface area, can be beneficial for maintaining optimal water flow. Its size can help prevent clogging and make it easier to manage, but it may require a more frequent replacement schedule to ensure it continues to effectively purify the water.
Are There Specific Types of Activated Carbon Recommended for Reef Aquariums?
High-Performance Activated Carbon: High-performance options are treated to improve their effectiveness in removing a wider range of impurities, including those that are particularly harmful to sensitive marine species. These carbons are often more expensive but can provide significant benefits in maintaining a healthy reef environment.
Low Dust Activated Carbon: This carbon minimizes the amount of dust produced during handling and use, which can otherwise lead to clogging of filters and temporary pollution of the aquarium water. This type is especially suitable for reef aquariums where maintaining clear water is crucial for the health of corals and other inhabitants.
Specialized Marine Activated Carbon: Designed specifically for marine applications, this carbon is treated to ensure it does not release harmful substances back into the aquarium, thereby protecting delicate reef systems. It is formulated to be effective at removing organic pollutants while being safe for all types of marine life, making it an excellent choice for reef aquarists.
Which Brands Offer the Best Activated Carbon for Reef Aquariums?
The best activated carbon brands for reef aquariums include a variety of options known for their purity and effectiveness in maintaining water quality.
- Seachem Matrix Carbon: This activated carbon is known for its high adsorption capacity and is specifically designed to remove impurities without leaching harmful substances back into the water. It is suitable for both freshwater and marine environments, making it a versatile choice for reef aquariums.
- MarinePure Carbon: MarinePure offers a unique blend of activated carbon that is engineered to provide superior water clarity and odor removal. Its porous structure allows for a greater surface area, which enhances its ability to remove organic pollutants and toxins, promoting a healthier reef ecosystem.
- Bulk Reef Supply (BRS) High Capacity Carbon: This carbon is highly regarded for its low ash content, ensuring that it does not introduce unwanted contaminants into the aquarium. It is effective at removing discoloration and impurities from the water, making it an excellent choice for maintaining optimal water conditions in reef tanks.
- Hikari Ultimate Activated Carbon: Hikari’s carbon is specially processed to ensure maximum adsorption capabilities while minimizing dust and particulate matter. It is ideal for reef aquariums as it effectively removes impurities without affecting the delicate balance of the tank’s chemistry.
- Drs. Foster and Smith Premium Activated Carbon: This brand is well-known for its high-quality activated carbon that provides excellent filtration and odor control. It is specifically formulated for marine aquariums and helps to maintain crystal-clear water while being safe for reef inhabitants.
What Makes These Brands Stand Out in Terms of Quality and Performance?
Several brands are recognized for offering the best activated carbon for reef aquariums, each distinguished by their quality and performance.
- Seachem Matrix Carbon: Known for its high adsorption capacity, Seachem Matrix Carbon effectively removes impurities and toxins from aquarium water. It is specially designed to minimize dust and fine particles, ensuring a cleaner and more efficient filtration process.
- Marine Depot Premium Activated Carbon: This brand features a high-quality, coconut shell-based carbon that offers superior filtration and is free from phosphates and silicates. Its large surface area allows for enhanced adsorption of harmful substances, promoting a healthier reef environment.
- Dr. Tim’s Aquatics Activated Carbon: Dr. Tim’s carbon is crafted to not only absorb pollutants but also to maintain water clarity and quality. It is specifically designed for reef aquariums, ensuring that it does not leach any unwanted chemicals back into the water.
- Fluval Carbon: Fluval’s activated carbon is highly porous and is known for its excellent ability to remove odors and discolorations from aquarium water. Its uniform granule size ensures optimal flow through the filter, which helps to maximize its efficiency and effectiveness.
- CaribSea Super Activated Carbon: This brand is praised for its eco-friendly manufacturing process and high adsorption capability. CaribSea’s carbon is effective at removing harmful substances while also being safe for delicate reef inhabitants.
How Often Should You Change Activated Carbon in a Reef Aquarium?
The frequency of changing activated carbon in a reef aquarium depends on several factors, including water quality, tank size, and the amount of waste produced.
- Every 2-4 weeks: For optimal performance, it’s often recommended to change activated carbon every 2 to 4 weeks, especially in heavily stocked tanks or those with high bioloads.
- Water clarity and odor: If you notice a decline in water clarity or an unusual odor, it may indicate that the activated carbon is saturated and needs replacing.
- Size of the tank: Larger tanks may require less frequent changes due to a greater volume of water diluting impurities, while smaller tanks may need more regular replacements.
- Type of activated carbon: The quality of activated carbon can affect how long it lasts; high-quality carbon may provide better adsorption and require less frequent changes compared to lower-grade alternatives.
- Monitoring water parameters: Regular testing of water parameters can help determine when to change activated carbon; spikes in nitrates or phosphates may suggest it’s time for a change.
Changing activated carbon every 2-4 weeks is a general guideline that helps maintain optimal water quality, especially in environments supporting sensitive reef organisms. If the water clarity diminishes or an unpleasant odor develops, it’s a sign that the carbon has become ineffective, and a change is necessary. In larger aquariums, the need for change may be extended, but consistent monitoring is essential to ensure water quality remains high. Additionally, investing in the best activated carbon for reef aquariums can enhance filtration effectiveness and prolong the time between changes.
What Signs Indicate That It’s Time to Replace Your Activated Carbon?
Most experts recommend changing activated carbon every 4 to 6 weeks, depending on the bioload and specific conditions of your reef aquarium. Regular maintenance schedules help ensure that your filtration system operates effectively and keeps your aquatic environment clean.
Related Post:
