I've got some OGs going in 2gal containers and it seems when they get to about 5-6wks old they start going purple which eventually leads to dried out dead leaves. I feed my plants with every watering at about 6-1000ppm total 6.0-6.2ph in promix soil. I'm thinking this might be some sort of lockout because I'm not running straight ph'd water thru them ever, is this most likely what is happening? Any info would be appreciated. Thanks
What's your PH/PPM of the runoff? FEED-WATER-WATER-FEED-WATER-WATER. It's good practice to follow this schedule, too.