The Planted Tank Forum - View Single Post - Adding Potassium
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post #2 of (permalink) Old 03-21-2015, 12:08 AM
Diana
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https://www.plantedtank.net/forums/sh...d.php?t=148187

This may help.

Lets see...
if you shared 2-1/4 grams among all your tanks, then that would raise the potassium by 2 ppm.
There are 22 doses of 'water' in 250 ml when you dose @ 5ml/30 gallons.

I am coming up with 50 grams of K2SO4 mixed with 250 ml of water.
Dose @ 5ml/30 gallons to raise the potassium level by 2 ppm.
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