Is that foil i see in the back ? Get rid of it it only reflects heat.. Line your walls with mylar to get the most out of your lighting. It will help alot.
Whats the temps in there ?? Are you sure your not blowing hot air at em ??
Does look like nute burn though. Just water for a while.. Thell be just fine.
Yea the flush washed all the nutes out the soil... A lil N should help the yellowing.. Id add some P also since there flowering.. Some yellowing at that stage of flowering is pretty normal though ..
Dude theres not much wrong with them plants. a lil nute burn is all .. Id say repot them in bigger pots . With some good soil and dont add any nutes for a while .. and thell be just fine.
Sorry man I been a way for a bit ... That Dr 80 is recommended for a 250 watt light... But hey go big or go home is what i say..
With those 2 fans you got blowing air around Can you take one fan and have it blow hot air out of the tent like an exhaust fan ??
Then open one or two of the free...