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From The Aquarium Wiki

how much per gallon do you use to raise the Ph 0.5?

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You didn't leave your name....

Hard to say, a lot depends on your existing KH of the water.

To raise the KH without raising the GH, add sodium bicarbonate (NaHCO3), commonly known as baking soda.

1/2 teaspoon per 100 Liters raises the KH by about 1 dH. Sodium bicarbonate drives the pH towards an equilibrium value of 8.2.

So try half this dosage if your KH is low. :-)

--Quatermass 16:10, 29 January 2007 (CST)

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