closet 3

i need some serious help. all my plants are going nuts. its a MH on 18/6 all ph is 6.5,half MG half happy frog. its tanning and then drying out there is a 6 inch fan by it pumping hard, fed it once then flushed double bubble MG/HF, been flushing for 3 days now white rhino browns on the tip then yellows and crumples.jack herer, in HP been flushing for a week now.it looks like rusty spots I've been having my whole closet go one plant after another. is it safe to say that JH is phosphorous def, white rhino has N overdose and double gum is slight mag and needs the fan off? i need to get this right.

bump..............

Hey there, what type of light are you using, where is this being grown, and what day are you on

EDIT: By where i mean closet? basement? , also what is your water temp and the humidity level in the room

check temperature, you want it no higher than 85f. a thermometer in the dirt is the important one, i do use the one floating around the top of the plants as an indicator. Lights, you want 200w on each plant when they mature, if your plants are so close they grew into each other, you will have dying leaves and small buds with no potency either. ( cfl needs to be right in the plants, close as possible w/o burning)

nutes, use the good ones because its harder to over nute. #1 problem with new grows is grower is doing too much, trying to get too much bud for their lights or space, over-watering is a biggie.

your pics look sideways and fairly close to the problems on the leaves so its hard to give good hints so i went general, hope it helps? enjoy your rewards!