Help plz

just got 400watt hps light grew many times b4 with grow lights had plants going but they started willting maybe from heat idk but temp was 65-72 all the time had light on 24 hours a day is that the reason or any other ideas light was 3 feet from plant thx

i dont think its light..its probably over or under watering..imo

thats far away for the light if they're non-seedling vegging plants...but that would cause them to stretch, not really wilt much. Over/underwatering causes wilting as do a number of other things. Pics would be super helpful