The Planted Tank Forum - View Single Post - KN03
Thread: KN03
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post #6 of (permalink) Old 08-12-2003, 05:13 PM
Are these real?
Wasserpest's Avatar
Join Date: Jun 2003
Location: Monterey, CA
Posts: 15,382
You can't really test for Potassium. Just take Chucks calculator, plug in 1 ml water, your tank size, and then play around with the teaspoons and see how many you need to get to 20 ppm.

After a gradual initial addition to bring it up to that level you will be dosing just for the water that you change.
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