Downward curled leaves

My thoughts. This looks like root issues to me, probably from fluctuating pH and inconsistent watering. Plus perhaps also some light stress as well that can look similar/same.

First we need to confirm if over or under watering. Do the leaves feel thin and papery or thick and heavy? If limp and papery your under watering, if heavy and drooping then over watering.

When you water, are giving it enough to get a good runoff? An how long does it take for the medium to dry again? Need to make sure you give roots a good healthy watering and allow to dry out enough.
Have you tried doing a slurry test to confirm the pH of the medium?
Raising the pot off the floor is a good idea to keep the roots off the cold floor and allow better drainage.
I'd raise the light just a touch if possible until she looks healthier again in case light stress is adding to the problem.

Good luck!

WintersBones said:

My thoughts. This looks like root issues to me, probably from fluctuating pH and inconsistent watering. Plus perhaps also some light stress as well that can look similar/same.

First we need to confirm if over or under watering. Do the leaves feel thin and papery or thick and heavy? If limp and papery your under watering, if heavy and drooping then over watering.

When you water, are giving it enough to get a good runoff? An how long does it take for the medium to dry again? Need to make sure you give roots a good healthy watering and allow to dry out enough.
Have you tried doing a slurry test to confirm the pH of the medium?
Raising the pot off the floor is a good idea to keep the roots off the cold floor and allow better drainage.
I'd raise the light just a touch if possible until she looks healthier again in case light stress is adding to the problem.

Good luck!

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Thanks

pH has had very little fluctuation, and even with slight changes of a couple tenths, the soil slurry is always 6.5 +/- .5 (I'm using a lab quality pH probe that I am very confident with. I've been using the same model for years and they are always spot on when maintained properly)

This strain was much more susceptible to light stress then the ones running under the same lights, that said they were vegged under the same lights no change in height or intensity since flip. But the stretch got it closer to the lights, that could be causing issues.

I'll check leaves when get back. Watering hasn't been inconsistent except for recently, while I was trying to correct the problem. As others have mentioned, it may be underwater now. Always water slowly until I get runoff from the bottom of the fabric pot, and they've been taking roughly 48h until the top layer of soil is dried out.

Seems like it might be combination of several issues accumulating in a less than robust strain.

So for now, I think I'll insulate it from the floor, turn down or raise the light, and give her more water.

I'll update this thread with a conclusion either way. Thanks again everyone!

Is 65* f damaging to roots. Serious question. That doesn’t sound that cold to me

bam0813 said:

Is 65* f damaging to roots. Serious question. That doesn’t sound that cold to me

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Closer to 60 and below you can start to see problems quicker, but those temps for cannabis I think are leaf temps...having roots in direct contact with cold temps can lead to cold, damp environments for your roots. In addition there's reduced photosynthesis so your plant grows at a slower rate.

I stuck a thermometer into the bottom of the pot and its 67⁰, I put a foam floor mat under it and turned the light down a little.

Is it safe to assume if it does recover I will only see progress in the new growth?

End of week 8 update. I don't what exactly the issue was or combination of issues, but I'd consider it slavaged. Thanks all