In stonington blend soil. Gave one feeding of foop nutes. ph to 6.5. 75 degrees, 50-55 rh. 400w light at 50% at about 12-16 inches from canopy. Other plant perfectly fine.
Node spacing indicates that your light intensity is really good. I’d leave it where it is at the moment. I would turn it up a bit when you get to flowering and the canopy is larger.
Welcome, I used FOOP for one of my grows and had a nice results. I pretty much just followed their schedule. I did peak at run off numbers to make sure things stayed on track.
Week 5, day 2. The plant with the yellowing leaves is finally correcting itself. I think it was too much light. Its correcting itself now after taking it out the tent and just letting it sit in my lung room for a few hours. The other plant loves the light so i let it sit in the tent by itself during that time.
Ya that was light stress/burn. Yellow burned tips is most likely light stress, if was brownish/orange tips, then its nitro tox. Atleast you realized sooner then later.