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Effects of clay substrate on PH, KH, and GH

Discussion in 'Sediment / Substrate' started by Dale Hazey, Aug 21, 2017.

  1. Dale Hazey

    Dale Hazey Junior Poster

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    I have 2 bags of seachem flourite in one of my tanks. I have been searching here and googling, but I am finding little information, mostly talk about terra cotta clay pots...
    I know clay has iron which is good, but it also binds with certain fert compounds which also sounds good, making them available to plants when needed.
    What affect does clay have on PH, KH and, GH in the planted aquarium? I am guessing it can slightly lower the KH or GH by binding with calcium carbonate, magnesium, certain ions or anions or cations? Not sure on the chemistry here.


    Thanks.
    Dale.
     
    #1 Dale Hazey, Aug 21, 2017
    Last edited: Aug 22, 2017
    DutchMuch likes this.
  2. DutchMuch

    DutchMuch Junior Poster

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    lol and you call yourself a noob! :rolleyes:
    Wish I even knew this much!
     
  3. Dale Hazey

    Dale Hazey Junior Poster

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    Hrm, all I had to do was read seachem's FAQ and it states it won't effect PH. That's what I was most interested in.
     
    snarkingturtle likes this.
  4. Dale Hazey

    Dale Hazey Junior Poster

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    Guess I will add,
    clay has a high cation exchange capacity(CEC). So does organic soil. Calcium, magnesium, potassium, and sodium are some cations that can be adsorbed.

    Phosphate is an anion...

    I have to reread the water chemistry article...

    I'm no chemist and I think this subject can get fairly complicated.

    Goodnight.
     
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