Seachem De*Nitrate - De Nitrate - Aquarium Nitrate remover

    Seachem De Nitrate


    Seachem's de*nitrate is a high porosity filtration product for the removal of nitrate in  the marine and freshwater aquarium by anaerobic denitrification. It is a porous inorganic solid about 4 mm in diameter and does not require a special denitrifying filter or special culture feedings. It is also helpful in controlling nitrite and ammonia.



    Seachem De-Nitrate Supplement for the Marine Aquarium 100ml / 250l / 500ml / 1000ml


    • High porosity biological media
    • Removes nitrates, nitrites, ammonia
    • Assists in breakdown and removal of organics
    • Pore size well suited for anaerobic bacteria
    • No danger of hydrogen sulfide production

    Seachem's de-nitrate is an economical, natural, porous material that promotes aerobic nitrification within the first few millimeters of depth and anaerobic denitrification at the core, similarly to live rock in the marine aquarium.

    De-nitrate is an excellent media for aerobic nitrification too and can significantly increase the biological filtration capacity of the marine aquarium when added to an area of the sump, a media reactor, or a canister filter. At high flow rates (greater than 378 L per hour), it will function solely as an aerobic filter. At slow flow rates (less than 189 L per hour), it will function as both an aerobic filter and an anaerobic denitrifying filter. 

    It is recommended for best results to rinse off dust before use.
    For best results, De-nitrate should be placed to assure the flow of water through it, such as in a media reactor or canister filter, chemical filtration module, or box filter. Flow rate should not exceed 200 L per hour if nitrate reduction is desired.
    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.

    500 mL of De-nitrate will treat about 100–200 L, depending on initial nitrate concentration and the current biological load. 

    If very high nitrates are initially present, they should first be brought down to less than 20 mg/L with water changes.



    We want you to be fully happy with your new macroalgae addition. Therefore we offer you a hassle free Satisfaction Guarantee.  

    If you are not 100%  happy with the macroalgae you have received on arrival we will refund you the full money back.    *1
    We even will cover the return costs. The refund will be offered after we arrived and checked the returned marine algae.

    *1 = Valid for UK Orders only, please see our Terms for EU orders HERE 


    We offer for sale macroalgae from our mature macroalgae mother colonies in a premium quality & 100% healthy within the UK and EU.
    All live algae species are sustainably grown in the UK.

    All macroalgae will be well protected when posted to you to ensure that it will arrive in the best condition at yours.


    We won't be beaten on the premium quality of our live algae cultures, and surely not on the price either!

    Have you seen the same macroalgae somewhere else cheaper?

    Please just send us a message HERE and we will check your request within 24 hours ( working days only ).

    When we can match the other price we will send you a discounted offer which will be valid for the next 7 days after receiving our email.
    This offer will be just valid for purchases using the same email address provided before.

    The price match offer is only valid for identical, same size/amount and available macroalgae species.
    As a proud UK based tax paying business, we don't price match any offers against auction sites or from private sellers.

    The price match offer is just valid for UK deliveries. We reserve the right to refuse a price match request.

    If you have any questions please don't hesitate to contact us.

    Your Livealgae UK

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