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ph up question

i think i remember that . i will have to revisit that section or it might be a video.

It is on this site: http://www.growweedeasy.com/ph

For PH Down - 1 mL/gallon of water will generally reduce your pH about 1 point. That's just a very rough estimate, but gives you a starting point. In imperial measurements, that's 0.2 tsp/gallon (1 tsp/5 gallons) will reduce the pH by 1 point.

For PH UP - PH Up is not potent stuff! It actually has a very weak effect. Compared to PH Down you will need to add much more PH Up to adjust the pH by the same amount.
 
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