Curling and Cupping.

Any idea what the problem could be? Some leaves or curling/cupping up. I thought it was being under watered but, the soil is moist. I have also raised the lights but, the rest (5 plants) are good so I do not know if that can be the problem. They have gotten a bit worse since yesterday.

You might have to remove or elevate the plantpot(s) above the catchpan. They also look on the boarder line of being overfed.

Also, I think the curling may be from too high heat and little humidity. Try bumping the temps down or get it closer to the light and it should stop.

I think bird and cereal have good ideas. More details will be needed on your grow if those ideas don't pan out.

Combo problem starting.
Heat/moisture stress. They show that they are trying to transpire faster (cupping) and that's the heat part. RAISE the light some and increase airflow to help lower temp at canopy level.
Water a larger amount OR more often! I water every day a measured amount to last them 24hrs! That gets MORE 02 to the roots and that's a good thing!!

This problem left unchecked will increase the amounts of nutrients drawn up to the affected area and that in turn will create an over fertilized problem (nute burning).

Good Luck

bird mcbride said:

You might have to remove or elevate the plantpot(s) above the catchpan. They also look on the boarder line of being overfed.

Click to expand...

Looks like you're in a soiless medium (pro-mix) doing drain-to-waste? that catch pan is probably keeping things a lil moist & will collect an abundance of salts that get sucked back into the medium...
ditch the pan, flush- let drain, wait til the pot dries out, work your way back up to your feed schedule... may be slow going but they'll bounce back once the issue gets resolved. good luck!

Thanks guys. I did not water yesterday/raised the lights and the plant looked good the curling has for the most part gone away. However, today in the morning it looked like this. What could cause this high humidity? Under watering?

View attachment 3015001View attachment 3015003

Could be borderline root bound, need to fill them pots entirely with soil, I'd transplant.

Thanks guys, after 6 hours of darkness it has really perked up. Any ideas why it went from curling/cupping, to drooping so quickly? Could humidity have caused it? Last night I did not run the fans with the lights it was not hot but, it did feel humid inside in the morning.

Over watered or ph issues ...over fed maybe