{"product_id":"seachem-denitrate-1l","title":"denitrate 1 L — Biomedia Natural Anaerobic Denitrification | Seachem","description":"\u003cp\u003e Seachem Denitrate 1L is a natural, porous, and economical biomedia whose pore distribution and geometry promote both aerobic nitrification at the surface and anaerobic denitrification within the media. It removes nitrates through the same process as live rock, with increased efficiency by forcing water to filter through its porous structure. The 1L format is suitable for denitrification reactors in medium-sized reef aquariums. Unlike sulfur-based media, it does not produce hydrogen sulfide.\u003c\/p\u003e\n\n\n\u003ch2\u003e Main advantages\u003c\/h2\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e Natural anaerobic denitrification — removes nitrates like live rock, with superior efficiency\u003c\/li\u003e\n\n\u003cli\u003e Dual function: aerobic nitrification (ammonia, nitrites) + anaerobic denitrification (nitrates)\u003c\/li\u003e\n\n\u003cli\u003e High surface area and high bacterial density — porous natural material\u003c\/li\u003e\n\n \u003cli\u003eNo danger from hydrogen sulfide — unlike sulfur-based media\u003c\/li\u003e\n\n\u003cli\u003e Never runs out — permanent biomedia, requires no replacement\u003c\/li\u003e\n\n\u003cli\u003e 1 L format — ideal for filling a dedicated denitrification reactor\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003ch2\u003e Use in reef and marine aquariums\u003c\/h2\u003e\n\n\u003cp\u003e Denitrate works thanks to its porous structure: oxygen is consumed by aerobic bacteria on the surface, creating anaerobic conditions in the core of the media where denitrifying bacteria remove nitrates. Flow rate is critical for denitrification: at flow rates below 200 L\/h (50 US gallons\/h), denitrate functions as both an aerobic and anaerobic denitrifying filter. At flow rates above 400 L\/h (100 US gallons\/h), it functions only as an aerobic filter. If high flow rates are unavoidable, use Seachem Matrix or Pond Matrix.\u003c\/p\u003e\n\n\n\u003ch2\u003e Instructions for use\u003c\/h2\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e Rinse off the dust before use\u003c\/li\u003e\n\n \u003cli\u003ePlace in a cartridge filter, chemical filtration module, box filter, or media reactor\u003c\/li\u003e\n\n\u003cli\u003e The flow rate must not exceed 200 L\/h (50 US gallons\/h) for denitrification.\u003c\/li\u003e\n\n\u003cli\u003e After a few days of use, nitrate levels should begin to decrease and stabilize at around 4–5 mg\/L\u003c\/li\u003e\n\n\u003cli\u003e As long as nitrates remain under control, the product is not exhausted.\u003c\/li\u003e\n\n\u003cli\u003e Pre-filter the water with foam or cotton wool before adding the denitrate to prolong its lifespan.\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003ch2\u003e denitrate vs Matrix\u003c\/h2\u003e\n\n\u003cp\u003e Denitrate and Matrix are both permanent biomedia that support denitrification, but with different applications. Denitrate is smaller (gravel-sized) and more efficient per volume for nitrate reduction at low flow rates (less than 200 L\/h), ideal for use in a dedicated reactor. Matrix is ​​larger (10 mm) and supports denitrification at higher flow rates, ideal for use in a canister or sump. The two can be combined for complete biofiltration.\u003c\/p\u003e\n\n\n \u003ch2\u003eInterview\u003c\/h2\u003e\n\n\u003cp\u003e Nitrate doesn't run out but can become clogged with debris and biofilm. Pre-filtering the water upstream with foam or filter floss significantly extends its lifespan. Rinse periodically with aquarium water if necessary, being careful not to harm the internal bacteria.\u003c\/p\u003e\n\n\n\u003ch2\u003e Available formats\u003c\/h2\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e 100 ml\u003c\/li\u003e\n\n\u003cli\u003e 250 ml\u003c\/li\u003e\n\n\u003cli\u003e 500 ml\u003c\/li\u003e\n\n\u003cli\u003e 1 L\u003c\/li\u003e\n\n\u003cli\u003e 2 L\u003c\/li\u003e\n\n\u003cli\u003e 4 L\u003c\/li\u003e\n\n\u003cli\u003e 20 L\u003c\/li\u003e\n\n\u003cli\u003e 100 L\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003ch2\u003e Why choose denitrate from ReefSolution?\u003c\/h2\u003e\n\n\u003cp\u003e The 1 L format is ideal for filling a dedicated denitrification reactor with a low-flow pump. Combine it with Seachem Matrix in the canister or sump for high-flow nitrification, and use Seachem Stability to accelerate bacterial colonization. Monitor your nitrate levels with the Salifert Nitrate Test Kit or the Hanna Nitrate Checker.\u003c\/p\u003e\n\n\n\u003ch2\u003e Frequently Asked Questions\u003c\/h2\u003e\n\n\n\u003ch3\u003e Is the 1 L format sufficient for a denitrification reactor?\u003c\/h3\u003e\n\n \u003cp\u003eYes. The 1 L format fills a standard-sized denitrification reactor. With a pump set to a flow rate of less than 200 L\/h, nitrates should begin to decrease after a few days and stabilize around 4–5 mg\/L.\u003c\/p\u003e\n\n\n\u003ch3\u003e Does denitrate work if you simply place it in the sump?\u003c\/h3\u003e\n\n\u003cp\u003e When placed freely in the sump, the denitrate unit primarily functions as an aerobic filter (ammonia and nitrites) because the flow rate is generally too high for denitrification. For nitrate removal, a dedicated reactor with a low-flow pump is recommended.\u003c\/p\u003e\n\n\n\u003ch3\u003e Does denitrate absorb copper?\u003c\/h3\u003e\n\n\u003cp\u003e No. Denitrate does not absorb copper, making it ideal as a biomedia in quarantine aquariums where copper treatments are used.\u003c\/p\u003e","brand":"Seachem","offers":[{"title":"Default Title","offer_id":38010075644075,"sku":"000116013703","price":19.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0513\/7108\/1899\/products\/19249.jpg?v=1773621389","url":"https:\/\/reefsolution.com\/en\/products\/seachem-denitrate-1l","provider":"Aquarium ReefSolution inc.","version":"1.0","type":"link"}