Luckily none of those scare me... I have a 65 gallon RO/DI storage and fully automatic top off, so evaporation amount doesn't bother me at all. Bulb changes are just part of the game... no different than T5. I have heard horror stories about how much the electricity bill goes up. But this is reefing after all... I don't expect anything to come cheap lol. All good points though.
400w * 8hrs * 2 bulbs * $.31/kwh * 30days = $59.50 / month
80w * 8hrs * 4 bulbs * $.31/kwh * 30days= $23.81 / month
(400w x 2 + 80w x 4) *3.413watts/btu*8hr*30days = 917,414BTUh / 13 SEER = 70.570 kWh * $.31/kwh = $21.88 / month
So in my ESTIMATE that will cost you about $100/mo (with a rate of $.31/kwh like our tier 3 rate is) to run it 8 hours daily with a 13 seer AC unit. My average electricity bill is around $80-90 a month.