TheDude707 said:

Trying to figure out what is damaging my fan leaves.

Flood/Drain under 1200 w Nano's. Floods once a day- pots still wet when picked up, but they are still drinking adequate amount. (36 plants go through 15 gallons a day)
PH 5.5-6.0 tap water. No tea's added. No hard water that I am aware of.
House and Garden Nutes w/ kicker of bud candy
Midway through week 5 of 9
Room temp in the 80's at top of the plants, my lights would shut off if it ever got to 90F

Bugs- I don't think it is bugs- I used a light mix of Bayer in veg which wiped out previous encounters with Aphids. No mites. Nothing showing in the coco.

Fungus?- Could it be rust mold? Not PM- I've had that before. The undersides of the burn/damage does look a little brown, nut that could just be burnt

Chemicals?- Could it be a cal/mag deficiency? I understand HG has enough calmag and I've never needed it before. Could it be something else?

See attached photos- most plants affected at least a little in all sections of the tray(s). Some plants more affected than others.

Thoughts?

Click to expand...

Looks like you might be goin a little over board with nutrients... Fried leaf tips are a sign of over feeds. I would ditch the bud candy too.

I think the opposite there fucking hungry feed em

Do you have any fans pointed directly at them? That's my first thought. What's the RH? Are you using CO2 with temps running up like that?

They look puckered and dried out to me.

almost like a bit of root damage from over drying in between feeds..could be sumthin in the tap water too.

looks like nute burn to me, specifically too much pk. the leaves look dark and thick, meaning they're full. this looks like typical nute burn to me. more prolific where there's less light?

Looks like a little wind burn like seamaiden said. I've got one for you guys though. Ok so I am super nervous but am fairly confident that I am running into a little bit of a deficiency.
My plants are in day 6 of flower, in 4 gal ebb and flow buckets, being fed 4x a day on the Lucas formula with osa 28 and hydroguard.
I had a recent thrip problem in my res, treated accordingly with mosquito dunks (thurengeris Israelis) to hopefully kill all larvae in the water supply/hiding in the hydroton. Have been spraying with Monterey garden insect spray (spinosad) for about 3 weeks every 3-4 days as preventative/attack on the little fuckers.

As of last night I walked into the room to find a couple of leaves with this damage on it, and one of the leaves with damage on it had what looked like mite eggs on it!
Small amber colored dots, tried to get a pic under the scope.
There were two on the same petiole, I knocked them off and they were hard, malleable, and cut easily with a knife (one of them was like putting a small piece of glass under the flat side of a knife and applying pressure, it burst into many pieces. The other became softer after I worked with it a little, squashed totally flat and cut in half easily. Almost as if two little pieces of sap, which is what I hope they are! The leaf damage had me confused though