Its normal I'll say, ur temps between day and night can fluctuate like 11 degrees difference between day and night like in nature, in nature u dont get same temps though day and night, day always change., but try to keep it no more than 11 degrees difference between day and night., example: if u have day temps at 80 dont go down more than 69 or 70 rt. That way they dont get stressed out!!! Good luck grobro!! Toke on ====~~