I have been using house and garden. I typically use a little over half of the recommended amount, I find that some of the additives like Nitrogen etc that they sell are really concentrated so I use about a quarter of the recommended dose for those.
my latest problem was really bizarre to me. I had three going just fin ww. two of them were really getting bushy I was feeding them half doses of fertilizer. The third was slightly smaller and had leaned over (not doing any tie ups at this point ). I topped all three plants twice. then at day 37 the 2 healthiest plants snapped about 3" up from the roots. I could understand if it was right at the roots but 3" up? I tried at this point to tie the biggest one up but it just died from me moving it around. the other plant I just let it sit. I immediately flushed the system. now I am at day 54 buds are developing (still several weeks from mature), the one broken one's stem actually regrew and eventually lifted itself off the side of the planter, the one that was the smallest is now actually a fairly healthy plant. I don't want a repeat of this situation. The stems that broke looked conical at the break like a minature beaver had felled them. I talked to my mom and she said that it sounded like maybe the cell wall had just collapsed. So this is why I have asked the question.
I hope that my description is good enough, I am usually really good with the photos but it has been a busy and trying spring and summer. I did have the presence of mind to take notes at least. I am wondering if I just am not super cropping enough or if I need a stronger fan or both. I have attached a couple current pics. pics are with light off and I need to do some housekeeping its not as much of a hot mess as the pics make it look. I am running Led and usually when plants are healthy a 600lec. any advice is welcome!