Sorry I'm new, I'm in one gal pots, using ffof soil, ff big bloom tiger bloom, cal mag and sweet raw... I'm also using one 300 w full spec led and one 150 w full spec led, problem didn't start till about last week... I feed water feed water and it's roughly ever 3-4 days I between each... I slowly got up to recommended dosages of all products my lights are 15inches from tops and I have what I think is really good flow of air... Only the tops affected, leaves tips are burnt and it's going down the edges of the leaves as we'll... I think it's nutes burn, possibly from my lights too, idk I've never dealt with this problem! Thanks also I would love to add pics but don't know how too yet
move the light up like said above and go easy on the nut's this week, It could be over feeding or it could be over heating.