smokefacekillah
Well-Known Member
So I have an 8gal reservoir, My ppm is at 455, I need it to go back up to 800 or something , My plants are starting to yellow a bit, I didn't want to dump the whole res, only about 2 gallons have evaporated, So how do I go about bringing these ppm's up, I'm using the lucas formula at 0-5-10