Wow lots to unpack here. Firstly the pot is not sitting on the ground. It is elevated 2” above the floor. Runoff tray is probably a good idea, but not something that is affecting my plant. Could probably use more water at each feeding to increase run off. Nutes we’re not introduced until day 35.
I see no help regarding the actual question asked and only criticisms regarding other parts. Advice is welcomed, but no need to be condescending. My light is at its current height based off witnessed growth. I started at 18” and the plant growth was much slower.
again I will ask my question for future reference as magically the addition of cal mag with no other changes stopped the spots from spreading. Any thoughts on what type of deficiency or lockout?