Im using distilled water, I'm trying to remember what I've been doing more of and I think it's I've been feeding it a whole gallon of mixed nutes instead of a half, they were doing fine until a week ago.
I raised my lights the most that I could, the plants are half the height of my grow tent, rn they're about 18 inches away from it, I also checked the roots and the bottom half look like this
I'm following what tiger bloom says and I'm giving it 5 ml of calmag when it shows calmag def, so tiger bloom is 10ml per gallon, and I feed about every 4 days and yes I do check ppm and pH of mix. I have to use between 2 and 3 ml of pH up to get it at 6.5
I want to know what in doing wrong, I think it's either nute burn or pH, I've been feeding water since this started a few days ago pH of water was 6.5 came out 5, lights are Mars hydro 600w they were 12" now 18", using ff tiger bloom and calmag plus