Upturned leaves

[MrC]

Could be too much light imo, what’s your light cycle ? How far away are the lights now?
Redz

Had a Sunmaster Cool Deluxe MH 400w to start, then added 150w led board at 60w to start, then that went up to 100w eventually. Swapped the 400w MH for a 250w MH as it was going into 30c. Never used hps/mh before so it was experimental I'll add. Even though the heat was ok they still turned to the sky. Took the MH out as the only thing I could think of, at a complete guess, was too much light. And as I've used Led before thought it best to take the MH out and carry on with Led. Height has been as low as 16in accidentally because of going by heat/hand test, but up to 22in since yesterday. Lights on 24/7. Now Led is on 135W (full power) . Hope this has made some sense. Cheers for lookin in

Where is your thermometer? floor or canopy height?

One on pot resting on soil and one goes with the canopy as it grows.

[fkmiller]

I've got exactly the same problem. 2 weeks in from seed. had them on canna start and went on to canna vega A+B yesterday.also spraying folage with collosal budbast.it's an attic grow and was pretty hot the last few days so left door of tent open.humidity is low,goes between 20% and 32%.i bought a humidifier but it arrived faulty so waiting on a replacement.i've moved the 600w light up a bit.it's sitting maybe 2.5 feet above plants. did you have any joy yourself with your own problems?

[redisiel]

Give the plants a break mate, try 20/4 at least imo all plants need a dark period.
Hope it helps
Redz

[Mac]

100% agree with red on this one. Light stress would be my call, very easy to do with LED even at good temps and low power.

[MrC]

I've got exactly the same problem. 2 weeks in from seed. had them on canna start and went on to canna vega A+B yesterday.also spraying folage with collosal budbast.it's an attic grow and was pretty hot the last few days so left door of tent open.humidity is low,goes between 20% and 32%.i bought a humidifier but it arrived faulty so waiting on a replacement.i've moved the 600w light up a bit.it's sitting maybe 2.5 feet above plants. did you have any joy yourself with your own problems?

Yeh, seemed light was the issue, too much too soon, had the mh out for a bit, now managing to run 250 dual spec hps and LED at 110w atm. Started at 50w goin up 15 w at a time, cheers redz seems you were spot on

[fkmiller]

Give the plants a break mate, try 20/4 at least imo all plants need a dark period.
Hope it helps
Redz

i'l try that then mate.thanks for the advice.i'l let you know how I get on.

[cough]

I know heat and wind are favourites, but does the start of a mite issue look like that? I've just read so anyway.