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Question about Ferts

Discussion in 'Talk to Tom Barr' started by beastboi, Sep 15, 2008.

  1. beastboi

    beastboi Junior Poster

    Aug 11, 2008
    Likes Received:
    Local Time:
    12:36 AM
    Okay guys I'm stump, I have alot of green spot algae (gsa) in my tank. What I've been reading it says to check the light and add phosphate or possibly add more

    My question is about the "Phospahte" yes I'm using the pfertz line of ferts but once i'm finish with it i'm switching to dry ferts, the pfertz lines does not have phospahte it comes with a bottle of N(nitrogen), P(phosphorus), K(potassium), and a bottle of M(micros).

    My guess is to add more P(phosphorus) = Phospahte, so what i'm saying is, is phosphorus and phospahte the same thing? Kinda confuse. Thanks.
  2. Tom Barr

    Tom Barr Founder
    Staff Member Administrator

    Jan 23, 2005
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    Local Time:
    12:36 AM
    P does not exist in the environment, but PO4 does.

    KH2PO4 is what you want and to dose.
    Mono basic potassium phosphate.

    cheap and 1 lb will last a very long time.

    While this is one cause, low PO4, CO2 is also the other.
    Make sure filter is cleaned often, good flow and trimmed routinely also.

    Then add PO4 and tweak CO2 from there.
    I wonder why Pferts does not use PO4?

    Are they another group that thinks PO4 limits algae:rolleyes:
    I hope not.

    Even ADA adds PO4.

    Tom Barr

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