The Three Main Types of Reef Tank Filtration

There are three main types of reef tank filtration: mechanical, chemical, and biological. Each type of filtration has its own benefits and can be used in combination to maintain a healthy and thriving reef tank environment.

Mechanical filtration: Mechanical filtration is the physical removal of debris and waste from the water in the reef tank. This type of filtration is typically achieved through the use of filter pads, filter socks, or protein skimmers. Mechanical filtration helps to maintain water clarity and reduces the amount of organic waste in the water, which can lead to high levels of ammonia and nitrite.

Benefits of mechanical filtration:

• Removes debris and waste from the water column
• Helps to maintain water clarity
• Reduces the amount of organic waste in the water, which can lead to high levels of ammonia and nitrite
• Helps to prevent the clogging of other types of filtration media

Chemical filtration: Chemical filtration is the use of various media to remove impurities from the water. This type of filtration is typically achieved through the use of activated carbon, phosphate removers, or nitrate removers. Chemical filtration helps to remove harmful toxins and pollutants from the water, which can be harmful to the health of the reef tank inhabitants.

Benefits of chemical filtration:

• Removes harmful toxins and pollutants from the water
• Helps to maintain water quality
• Can help to prevent the growth of unwanted algae
• Can help to prevent the formation of harmful bacteria and parasites

Biological filtration: Biological filtration is the use of beneficial bacteria to break down and remove waste products from the water. This type of filtration is typically achieved through the use of live rock or a biological filter. Biological filtration helps to maintain a healthy and stable environment for the reef tank inhabitants.

Benefits of biological filtration:

• Helps to break down and remove waste products from the water
• Promotes the growth of beneficial bacteria
• Helps to maintain a healthy and stable environment for the reef tank inhabitants
• Can help to prevent the growth of harmful bacteria and parasites

In summary, the three main types of reef tank filtration - mechanical, chemical, and biological - each offer unique benefits and are necessary for maintaining a healthy and thriving reef tank environment. A combination of these filtration methods is typically used to ensure optimal water quality and the health of the reef tank inhabitants.

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About the Author

Scott Shiles is the owner of ExtremeCorals.com, which he has operated for over 25 years and is recognized as one of the early dedicated live coral websites on the internet. A lifelong reef keeper since 1984, Scott has decades of hands-on experience maintaining marine aquariums and previously owned and operated a brick and mortar aquarium retail store for 10 years, including five years alongside Extreme Corals. He holds a degree in Marine Biology and has personally selected and sold hundreds of thousands of live corals. An avid scuba diver who has explored reef systems around the world, Scott shares practical coral care and husbandry knowledge based on real world reef experience.

Photo is courtesy of @bayarea_reef on Instagram.