Leaf edges turning up, RDWC

[Loc Dog]

I was just going to scrog a tent, and noticed a number of large leaves have the edges turned up, just a little bit, like maybe a millimeter.

Was wondering if it could be from low humidity. It is about 35%. I also added some bleach to reservoir recently, but not more than 1 or 2 drops per gallon.

If needed, can post pictures later tonight.

 

[king oscar]

Usually that's caused by high heat and excess light. You said you've had russets right? That's the first sign i see when they're coming back

 

[Loc Dog]

Usually that's caused by high heat and excess light. You said you've had russets right? That's the first sign i see when they're coming back

Thanks. I do not think the heat is an issue. 2 X 600 watt cooltubes in a 4 X 8 tent. Will spray them with neem, at lights out, just in case.