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aquasoil and po4 absorbing

Discussion in 'Sediment / Substrate' started by yme, Aug 18, 2010.

  1. yme

    yme Lifetime Charter Member
    Lifetime Member

    Nov 30, 2005
    Likes Received:
    Local Time:
    10:53 PM
    I need help....

    I replaced last week in part my substrate. I was unhappy with the perfomance of the inert substrate flourite dark. So I added to the flourite dark 30 liters of colombo flora base, which is an ada aquasoil imitation.

    The question is as following: I add PO4 EI based, but after one day PO4 drops below 0.5 mg/l. After browsing the internet, I found that aquasoils can absorb PO4.

    So the question is what to do???

    increase PO4 dosage to maintain >1 mg/l PO4 or keep the normal EI style PO4 dosage which will give a very low watercolumn PO4 level.
    Of course, if I add more PO4, the substrate will absorb more PO4 etc. is this a bad thing? will it release the po4 at some point?



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