im getin new batch of meat chicks only 25 to add to the other 50 i alrady got the temps here are 80-90s during day 70s upper 60s at night wich its warmer in the barn were the brooding pen is my question is with the hot temps do they really need a heat lamp? i have a heat lamp hangin above their pen i took the red heat blub out and put a regualr 60 watt bulb for lighting will that be ok? should i leave the light on all night?