Leaves curling in DWC

day 15 of 12/12, day 61 from seed
LED and T5's
Room temps are 65-70
water temps 65-70
r/o water, ppm 25
GH flora nutes ppm~550
pH 5.6-6.4



Some of the leaves are curling down



Others look great. Some older and some newer.



And I have one leaf that looks like it was run over, right on the top of the plant and no sign of bugs.

All replies appreciated!!!

Added some CaliMagic with my pH check today. Running out of ideas. HELP!

Too much nitrogen can cause clawing n it does look like some type of nute burn from the leaf tips.

Thanks TPG, that seems like a good bet. I will drop the nitrogen some more.

PetFlora said:

Plants actually need more N than people realize.

See Hydroponic Research VEG+BLOOM NPK ratios

How old are your nutes AND do you shake the shit out of the bottle before mixing?

I would remove a couple lowest nodes shade leafs to get some air in there.

Also as I asked on your other thread, "Are you using a fan"? If yes and the fan does not swivel, you are drying out the leaf surface. If it doesn't swivel, put it on a timer 15 m on, 30 min off

hth

Click to expand...

The small fan inside the tent doesn't move and was, at one time, directly over the plant with the curling leaves. hmm I will try the timer, easy fix. tnx again!

edit: I do shake the nutes, but not a bunch. They were bought from the local hydro store at the start of this grow.