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I've read so many posts and I think this shows Mg. def.? Setup: 400W HPS 12/12 going on 5th week light about 8-10" off tops have ferted. with a bloom plus 10-54-10 in week #2 which seemed to burn them, so i haven't done any since. They're in Fox Farm Ocean Forest with perlite. (2 gal. cont.)...

I've got yellowing, spots and purple stems developing in my three ladies. I'm pretty sure it's a N def. What's the best way to give them a nitrogen boost without burning them? Foliar feed them, or feed through roots?

What do you think this problem is? It's now starting to show on all three ladies. I want to get it fixed before it gets out of hand. I added Peters Super Bloom last week (very diluted) and this week. Are they over nutes? Are they lacking nutes? I'm watering about every other day if not every...

I've scowered the forum but can't find what I'm seeing on one of my plants two weeks into 12/12. The leaves are yellowing (light green) ad the veins are really yellowing. Some leaves that are still generally green show the yellow veins. What could be the problem. My water pH I try to keep...