Mark, what would it take to keep your tank running electricity-wise? If there is a number that is less than the $60-$80 range, figure it out and cut back the metal halide photoperiod, or turn off a heater if it runs at night.
I think I will do a MH ramping up/down phase every year based on the
four months, not three of increased electrical cost with Ameren. Our electricity is right now at 8cents/kwhr vs the usual 5cents/kwhr with a discounted rate for everything over 750kwh during the other 8 months.
The little money that you save taking the tank down you will lose with the losses you take...so, perhaps looking at other options besides the tank are worthwhile? Not sure, as I am not in your shoes right now.
In the past, my summer electrical bill with the 300g with 5 400w metal halides and AC at 68-70 was always about $500/month during the summer, but then dropped drastically the other months due to the lower rate and discount after the first 750kwh.
Either way, I hope you don't quit the hobby, but you know that already
