Been doing some research out of concern for high ph levels- seems to be a problem quite a few beginners such as myself have. From Here. Red Devil lye? Will it kill the plant? Will it mix adversely or otherwise kill some of the biological microrganic stuff going on in the soil that we want to have going on?? Is it best to mix this stuff with your nuke dosage, or just to use it as a last-ditch effort to try and bring up ph when all else has seemed to fail?