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Thread: Good plant growth, but Phosphates crash to 0ppm within hours of dosing

  1. #1
    Registered Member
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    Jun 2017
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    Andy

    Default Good plant growth, but Phosphates crash to 0ppm within hours of dosing

    (High Tech) Recently setup a 50 gallon cube with overflow to a sump below.
    Skipping to the point; I cannot seem to keep any level of phosphate in my tank.
    Substrate is Fluval Stratum and there is quite a bit of it. (over 8" near the back)
    I add Seachem Alkaline buffer daily to keep KH at 1dKH.
    Once tds go above 140 I will do an RO water change with Equilibrium, and more Alkaline buffer.
    Is this substrate known to absorb Phosphates?
    I brought levels up to 2.0ppm after lights out, and they are back to 0.0ppm before lights on.

    Sump has filter floss, bioballs, and 2L of Matrix.

    Not sure if I should keep increasing phosphate doses, or stick to small daily additions.

  2. #2
    Registered Member Pardal's Avatar
    Join Date
    Apr 2009
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    Atlantic Beach.FL
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    1,201
    Real Name
    Julian

    Default Re: Good plant growth, but Phosphates crash to 0ppm within hours of dosing

    I will go to small daily additions. How are your plants doing if they are thriving that's means is working no need to increase . I haven't kept (High Tech) plants for years now. but that is what I will do. Fluval is a great substratum second only to Amano's ADA.
    Breeding , interest and goals Wilds Heckels and Cuipeuas and a few Domestics pairs with occasional fry as well as Angels fancy Plecos , corys and shrimps.

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