Twisted droopy leaves with curled up tips. Heat stress?

Well running in 16oz solo cups with room temps above 74F is what the real problem is, there is not enough protection for the roots at room temps of 81F in solo cups if you are hand watering them.

So would transplanting them fix it?

Have you measured your nutrients? I've seen my plants do that when I over fed them.

Yeh they are at half strength for the longest. Plus this plant is a champ. Never had nute burn before

heat was the cause, but the symptom is plant dryness.

flush with plain water that's been pH'd to 5.0-5.2, lower light wattage, lower room temp, increase relative humidity, reduce circulation/exhaust fan speed, maybe even foliar feed plain water. bring everything back up to where you had it after the plants looks to be recovered, at least 3 days.

lower ph water is essential because dried out media is going to contain a lot of salts that precipitated out of the nutes. this not only raises soil pH, it might encrust roots and choke them. lower pH will dissolve them back into solution more easily and bring you back to normal pH. if your runoff pH is higher than you want it, maybe even soak the entire pot in low pH'd water for about 30 mintues, then flush again.

if it recovers, the leaves won't change shape. they'll stay curled, but any new growth at the base of those leaves will appear to grow straight.

i wouldn't transplant.

good luck!

i moved the babies to their new growroom. raised the lgiht about a foot. transplanted one of the babies and blasted the ac. i also flushed the main beast turned gimp with ph 4.8 water. hope thats not too low cause i was tired from building the room all day. one is in a 7 gallon bucket and the rest are still in solo cups. i have the lamps bought soon but wont transplant the others til later. thanks for the help so far hope they are gonna get better

4.8? Probably too low.

raised it back to 5.2 transplanted 8 of the bad ones into 7.5 gallon buckets. they seem better..