Curled leaves/heat stress

Have two wifi x cherry alien about 45 days old from seed. Have had them on 24 hour a day light on schedule but am planning to reduce to 18 6 once I get a new timer for my light which I’m now thinking will be very soon. Plants have been very healthy and are now showing some minor stress signs like the curled leaves and a few small yellow areas (very minor right now). My plan for these two is that they will become my mother plants for a hydro grow sometime in the next month or so when I can get a second flowering tent set up. Currently running 400 watts of mh to them thru an in-line cooled glass hood. Tent is a 4x2. Temps have been between 76 and high of 82.3. Humidity between 50% and 80%

Curling down dosnt look like heat stress more likely cold roots. But you say you have your temps on point so those symptoms could suggest over watered roots or they could be stressing out about never getting a minute of sleep since they’ve been alive

Darkoh69 said:

Curling down dosnt look like heat stress more likely cold roots. But you say you have your temps on point so those symptoms could suggest over watered roots or they could be stressing out about never getting a minute of sleep since they’ve been alive

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Haha I know the light schedule is not ideal and have been meaning to change it. I had an old digital timer from years back when I used to grow when I tried using it something wasn’t right so I couldn’t trust it and am buying a new timer today after work lol. I will try to ease up on the water for a few days and see if that will help. Just wanting to get them healthy and bushy before I take my clones

kingrichard1973 said:

Haha I know the light schedule is not ideal and have been meaning to change it. I had an old digital timer from years back when I used to grow when I tried using it something wasn’t right so I couldn’t trust it and am buying a new timer today after work lol. I will try to ease up on the water for a few days and see if that will help. Just wanting to get them healthy and bushy before I take my clones

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They dont look too bad

Darkoh69 said:

They dont look too bad

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Thanks hopefully I can veg them nicely for another 1-2 weeks and then take my clones.

Not sure what the problem is with a 24hr light schedule as cannabis doesn’t “NEED” a rest period in its vegetative stage. Curling edges usually means the plant is having a hard time transpiring, either because of high temps, overwatering or too much water vapor in the air i.e high RH.

TXskunkKush said:

Not sure what the problem is with a 24hr light schedule as cannabis doesn’t “NEED” a rest period in its vegetative stage. Curling edges usually means the plant is having a hard time transpiring, either because of high temps, overwatering or too much water vapor in the air i.e high RH.

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I have them set to 18 6 now. I believe the issues may be attributed to overwatering as my humidity hasn’t really been too high yet. I did not water them yesterday and will not again today I did think they looked better this morning and will post an update this evening. Thank you all for feedback

that’s great man, your girls really do look good . . Good luck with grow

A little update for today they are looking a little better whatever caused the brown spots seems to have been short lived because no more have shown up and they never grew in size. Leaves look a bit better also been on 18 6 a few days now I think it has helped some along with holding off any more water until needed. Temps and humidity holding steady 81 degrees around 55% rh