Denitrate - 34 oz.

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SKU: 198690
Manufacturer: Seachem
MPN: 137

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Seachem Denitrate is an all natural filter media that provides both nitrate removal and biological filtration. The highly porous structure of the media allows for aerobic nitrifying bacteria to colonize the surface of the media, as well as anaerobic denitrifying bacteria withing the media.  The result is a high performance product that removes ammonia, nitrite and nitrate at the same time.

Denitrate works best at lower flow rates, under 100 gph flow through.  At higher flow rates media will not provide anaerobic nitrate removal, but will still function as biological filtration.  For best nitrate removal, keep flow rates under 50 gph, to insure anaerobic bacterial growth.

34 oz. treats 50 - 100 gallons depending on biological load.


Package Size1 L
Treats up to100 gal.
Internal Id


Comprised of 100% natural stone.


Directions: For best results, de*nitrate should be placed to assure the flow of water through it, such as in a canister filter, chemical filtration module, or box filter. Flow rate should not exceed 200 L (50 gallons*) per hour. If higher flow rates are unavoidable, use Matrix or Pond Matrix. It is best to rinse off dust before use. Once de*nitrate™ has been in use for several days, nitrate concentrations should start to fall and level off gradually at a concentration of about 4–5 mg/L as nitrate. As long as nitrate concentrations remain under control, the product is not exhausted. Each 500 mL of de*nitrate™ treats about 100–200 L (25–50 gallons*), depending on initial nitrate concentration and the current biological load. Enough should be used to remove nitrate at a rate at least as fast as the rate of formation. If very high nitrates are initially present, they should be brought down to less than 20 mg/L with water changes.

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