It's tough to give an exact answer because there are different chemicals used to adjust the pH and some are more stable than others. I suggest trying the 2-4ml per gallon after nutrients were added and then adjusting more if needed. With some experience you'll get the feel for it and you'll know exactly how much to add in the future. Cheers!
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It's tough to give an exact answer because there are different chemicals used to adjust the pH and some are more stable than others. I suggest trying the 2-4ml per gallon after nutrients were added and then adjusting more if needed. With some experience you'll get the feel for it and you'll know exactly how much to add in the future. Cheers!