Leaves curling up like canoe

[Illadelph]

Leaves curled up around the edges like a canoe. Air Temps 75 - 86 F, water temps 80 F, i just threw a frozen water bottle in there to bring it down.
PH 5.5 RH 39%

what do you think is causing the leaves to curl like that? Water temps?

I've been steadily increasing the nutes for the past few days, am now up to 720 ppms (at least a quarter of which is cal mag)

 

[Maculele]

Take a look at mynamestitches sticky at the top of the infirmary.
I call excess light and/or heat on that... However since your room temps are in range, it's probably that the lights are too close. You'll find the answer to this one with a search

 

[00420]

leaf curl is heat related how close is your light? my bet is it's too close

 

[Illadelph]

it was atleast a foot away to begin with, moved it all the way to the top of the cab. 24hrs later, still no improvement.

 

[00420]

it was atleast a foot away to begin with, moved it all the way to the top of the cab. 24hrs later, still no improvement.

its not going to fix it self over nite

1. what size/type light
2. Are u still using ice in Rex too keep cool? Whats your temps now
3. what type of system is that? I see dripper is it dwc?

 

[Illadelph]

400w MH
still using ice in res. twice a day. To tell you the truth i dont think it brings down the temp that much.

air temps b/w 75 and 85

water temps stay at about 80

its DWC. Cal Mag fcked up my water pump so those drippers arent dripping. I was told i dont need them at this stage anyway, no? Having it off helps with the Res. temps. Same with the ultra sonic fogger, its off too. other than that its 2 airstones.

RH around 40%
bout 750 ppms, one quarter of which is cal mag
ph 6-7

could it be anything other than heat? when you said it wouldnt fix itself over night, do you mean it will take more than a day to see if whatever changes i make fix the problem?

They are still growing like fck. They seemed to have stretched a lot just today from the light being moved up. Could just be my imagination, they are for sure growing though.

Thanks for the reply, please help