The Planted Tank Forum - View Single Post - SeaChem Potassium vs. GLA's Mono Potassium Phosphate
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Old 01-06-2013, 01:03 PM   #2
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Seachem Potassium is used to dose potassium (obviously), KH2PO4 is used primarily to dose phosphates. Reaching any suggested potassium level with KH2PO4 would result in a phosphate level well beyond what is necessary (at the very least).

Checking the sticky at the top of the forum will provide recommended dose levels.
this link( provides a calculator to give results.

Calculating from your example...So if each ml of your solution results in .53 ppm of PO4 in 10 gallons of water and you want to dose a 50 gallon to .53 ppm you need 5 ml (5 doses of 10 gallons). If you want to dose a 10 gallon to 1 ppm you use 2 mls, etc.

Under-dose, over-dose, just right tends to be a matter of opinion.

Wishing I had a pithy quote
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