At what temperature will seedlings stop growing?

Pleased to say I believe I have identified the source of my seedling problems. They sprouted and than haven't grown very much at all, my humidity is fine 60%, and the soil is moist. Most of the time the temps were at 88-92, mostly around 90, however. I now have them down to 81 and will try to get closer to 72, anything but 90, right? Could I expect that the high temps caused delayed growth in my seedlings and they will come to with cooler temps? using (4) 23 cfl 6500k.

Its a little warm How far are they from those lights?

about 2 1/2 inches or so, not too close too cause burn, temps are now down to 79, i'm hoping they pull through. At least I know now what temps are acceptable...

In veg heat will not be an issue (they like it warm) just make sure there's plenty of air circulating. when you have to worry about temp is when you are in flower. Temps should be around 72-85 degrees depending on what strain it is.






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