Possible Deficiency? wk4 of flower.

Hi im growing 3 indica strains under a 600w hps with fan pulling over bulb for heat exhaust, in happy frog soil using fox farm big bloom and tiger bloom every other watering, i ph my water, my temps are at 77 and about a 10 degree difference at night. as you can see i fim'd and lst'd early on in their lives so now they are bushes, i vegged for 8 weeks and have flowered for 4 weeks. and now i am noticing on my god bud plant (far right of my scrog where the most bud sites are) the small leaves around the bud sites are curling up like a canoe and basically dying. any info you have on this would be great. by the way this is my first grow and i am in 5 gal containers.

Looks like a burn

I dealt with the same thing on one amnesia haze plant on my last run using foxfarm nutes trio and ffof soil. I've yet to figure out what it was. This run I'm organic and half of my bloom room is on week five with no yellowing leaves. The curling could be heat stress, light to close, but I'm not sure it'll cause the browning. That's why I mentioned my last grow because it started happening right at the switch and didn't stop until week 5/6. It actually started slowing down when I first watered with molasses week 3. It still yielded two zips though. I hope someone is able to identify it for you.

Its chem burn

I'll 3rd the nute burn, not terrible though. I would give them straight water for a while.

Uh oh now you have to be honest, have you been going heavy on the nutes? If you've been going light then it can't be nute burn unless you didn't read the box right lol

come to think of it i forgot to cal mag on the last couple waters so could that be cal deficiency? and ive never exceeded what the fox farm bottles reccomend and i always work my way up starting at 1/2 strength minimum. thanks for all the input lets keep it goin lol

Drizzle1994 said:

come to think of it i forgot to cal mag on the last couple waters so could that be cal deficiency? and ive never exceeded what the fox farm bottles reccomend and i always work my way up starting at 1/2 strength minimum. thanks for all the input lets keep it goin lol

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Well if you weren't adding cal/Mag then it looks to me like really late stage of cal Mag deficiency.

Pic's without grow lights on would help

Heat stress, nute burn, and Calmag.... Hmmmm