I told my hubby no and he's ok with it. I have my dosers dial in at certain times and I don't want to reprogram again. Not worth the little $$ I'm saving. I spend more on corals and equips and other stuffFor me no, but your rates... I don't know the amount of kw your lights use (guessing 1000watts total?) but would $16 a month during peak make a difference in the summer? Actually less than that because you still pay off peak rates if you just shift the photoperiod.