Seachem De*Nitrate is a top-of-the-line filter media designed specifically to provide additional support to the biological filtration process. The media itself is an economical, natural, porous material sporting a pore distribution, shape and large surface area that encourages beneficial anaerobic nitrification within the first few millimetres of depth and anaerobic denitrification at the core. Additionally, the media helps to remove harmful nitrates, nitrites, ammonia and organics that can cause harm or even kill your aquatic inhabitants. Live rocks or reef rocks remove nitrate by anaerobic denitrification and Seachem De*Nitrate removes nitrate using the same process, except the efficiency of this process is magnified several folds by directing the water to filter through the porous filter media. Due to this process, excessive flow rates should be avoided, as they may impede the development of an adequate anaerobic environment to support denitrifying bacteria and as is the case with reef rock, anaerobic conditions are achieved by the porosity and the depletion of oxygen by the aerobic process at the surface. De*Nitrate is an exceptional media for aerobic nitrification as well, making it an ideal biological filter in drip trays, canister filters, sumps or even box filters. As mentioned earlier, it is important to note that at high flow rates (greater than 100 GPH), it will function solely as an aerobic filter and at slow flow rates (less than 50 GPH), it will function as both an aerobic filter and an anaerobic denitrifying filter. Suitable for use in both freshwater and saltwater environments.

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Seachem Matrix Bio-Media is a professional grade high porosity bio-media designed to provide efficient biofiltration specifically for the targeted removal of nitrogenous waste in both freshwater and marine aquariums. This high capacity biofiltration helps to control harmful compounds in your aquarium such as ammonia, nitrate and nitrite, effectively keeping these elements at safe levels as to not harm the aquatic inhabitants of your tank. The media is an inorganic solid approximately 10 mm in diameter and boasts an exceptionally large surface area, with each litre of Seachem Matrix Bio-Media providing as much surface area (<162 m) as 40 litres of plastic bio-balls! The difference in efficacy and space-saving ability will make your head spin! As well, many plastic bio-materials only provide an external surface area for bacteria cultivation, whereas this media offers a spacious internal macroporous surface area with macropores that are the optimal size to support beneficial nitrifying and denitrifying bacteria. Unlike other common forms of bio-media, this allows Seachem Matrix Bio-Media to easily remove nitrate along with ammonia and nitrite, simultaneously and in the same filter for a more efficient and effective process. The media is completely inert and will not break down, nor does it need to be replaced. It is also compatible with nearly every type of wet and wet-dry filter. Use 250 mL of Seachem Matrix for each 200 L (50 US gallons) of aquarium water. The media may be placed in any kind of filter and is noticeably effective when used in a canister filter. The media is sufficiently large enough that no filter bag should be required for most applications. It works quite well in a variety of drip tray systems but may find that the larger Seachem Pond Matrix is better suited for such applications

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Seachem MatrixCarbon is a professional grade activated carbon filter media, that has been designed with a spherical bead shape as a way to ensure optimal hydrodynamics, maximum water flow and provide optimal macroporous binding sites for beneficial bacteria to grow. These macropores also operate as mechanical filtration, removing larger organic molecules like nitrogenous waste. The media has a rather low ash content which can be seen in the minimal impact it has on pH levels, and even when mixed with distilled water, the pH levels will never rise above 7.0. Compared to other major brands, Seachem MatrixCarbon has the lowest detectable leachable phosphate content, performs twice as well with the total capacity to remove organic matter, and has the best rate of adsorption and longest duration of use. This high-quality, bituminous coal carbon media maintains optimal water clarity in both freshwater and saltwater aquariums. 250 mL will easily treat 400 L (100 US gallons) of aquarium water for several months. Place the media in a filter bag. Rinse before use. For best results, Seachem MatrixCarbon should be placed in such a way as to maximize the flow of clean water running through it. The product can be effectively used in a canister filter, chemical filtration module, box filter, or any high flow area of a trickle filter.

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Seachem PhosNet, a top-of-the-line filter media, is scientifically designed to quickly remove harmful phosphates and silicates from both freshwater and saltwater aquariums. The media is a synthetic granular ferric oxide with a large surface area, high porosity and the ability to quickly and efficiently bind with targeted compounds to reduce the amount of phosphate and silicate within the water column. The media will also not release the compounds back into the water and is significantly less dusty than competing products.

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MarinePure™ Biofilter Media by CerMedia is the most technically advanced biological filter media available on the market today. Designed to be versatile and easy to shape, this bio-filtration substrate can be used in tanks, sumps, canister filters, DIY filters, trickle or shower filters, waterfall filters, and hang on back filters. MarinePure rids your aquarium water of ammonia and nitrites and reduces nitrate levels while also providing an ideal surface area for beneficial bacteria to thrive and multiply. As a result, fish waste and other harmful waste material are more readily eliminated from the water, creating a cleaner ecosystem for your aquatic pet(s). Thin Bio-Film Technology™ A specially designed porous surface with open, interconnected holes allows for the development of a thin bio-film. This bio-film provides key nutrients for beneficial bacteria to flourish. The open pores also allow bio-film to recycle and replenish easily without clogging the biofilter media, since water flows through the media rather than around it. Overall, MarinePure is a high performance bio-media that delivers great value by improving the quality and consistency of the aquatic ecosystem and water chemistry of your tank.

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