Night time temp

They are wrong, if anything I would try to drop the lights on temp down a little bit.... Your temps are good.. I shoot for lights on temp of 75 and lights off temp at 68... The bigger difference in light on and off temps may cause some stretch... I try to keep inside of a 10 degree difference between lights on and off... it is easier said then done......

Think ive cracked it. Lights on 74-78 and off 64-67
Thanks dude great help