Really not that hard. The Nectar for the gods has been in mid 700s, fox farm mid 800s. Which is high I guess. I generally try not to go higher than that throughout the grow also. I've got the earthworm castings with rabbit poop in there too. So that could be the issue. Not alone, but with the added feed. I might try a diluted feed instead of water only. Still haven't looked the info up. I'll do that now. I need a better ppm meter and pH meter honestly.
The lights are at 26" above the canopy. I actually split the two hbss and put the critical plus cbd in the middle. It's shorter, so naturally the light is lower in the middle, but the idea was to get some secondary light to each of the hbss. From the cob in the middle to canopy on either side is like 24".