I just want to verify I'm doing the right thing? I'm not giving my turkeys any supplemental heat. 5 1/2 weeks old roughly. And, it's been very hot here the past few days, 90 Sunday, 93 Monday, 93 yesterday, 94/95 today, 92 tomorrow. Nighttime lows only have gotten down to about 73-76. Is there a temp range that I should consider restoring heat, say if we have nights under 60?