Curling leaf droopy leaves

Hey guys my fastbuds auto stardawg day 14 and the leafs were curling down bad now they are straight but still curly.

Setup
LED 900w marshydro 2 at 24"
biobizz light mix soil
6gallon root pouch

Last water ph was 6.6 and ppm 450 my filter tap water is at 300ppm so 750ppm, 20ml/g big bloom 5ml/g grow big 10ml/g Rhizotonic.

RH 50-55% Temperatures 70-74.

it was sprayed with seaweed extract ph at 6.6 and the ppm was 700ppm I think that was the problem, I stopped spraying 2 days ago and the leafs look like they are recoving it was real bad 2 days ago it was curling down hard like I overwatered

Just wanted to share with you guys for your opinions.

Warm things up. When you spray plants and a fan is running. The temperature will drop. The leaf surface temperature can be lower then air temp by about 5 degrees f. If you misted them when it was 70 degrees. That'll drop temps enough to slow the plant. I'd bring it up to about 75-78.

SouthCross said:

Warm things up. When you spray plants and a fan is running. The temperature will drop. The leaf surface temperature can be lower then air temp by about 5 degrees f. If you misted them when it was 70 degrees. That'll drop temps enough to slow the plant. I'd bring it up to about 75-78.

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Ty for your info