Yep PH is first, and foremost. You are looking for a finite answer for a problem that could be a plethora of stuff. I will say however that typically in a grow situation like this there is a tendency to use as little soil as possible, and the problem you can run into a lot is peat in the soil breaking down rapidly, and causing the PH to plummet rapidly in the middle of a grow. Especially when the soil is drying up between waterings.
scrumby Reviewed by scrumby on . I've searched everywhere for an answer.... 1st time grower of anything, I ordered some "blue Mystic" feminized + autoflower seeds to grow inside of a PC grow case. I'm in the 3rd week of flowering. I started the 12/12 light cycle once i noticed some white hairs (pistils) start showing up on my plants, also switched the lights out to the yellow color lights instead of the white colored lights. I'm using 4 of the new energy saver bulbs, can't remember what they are called (CFLs maybe). They're the cheap ones you can buy at walmart, Rating: 5