who keeps cooler water tanks???

[fishorama]

I have 1 heated 20g long tank to 86F. It loses quite a bit of water from evaporation, glass lid but not tightly covered. My 55 river-ish tank, 75g bn pleco & cory & 110 plant only tanks are not heated. My house is heated winter days to 69-71F but lights & filters keep tanks warmer ~73F or so. The larger tanks don't lose much heat overnight at 65F for a few hours. Fine for fish I keep & sleeping, but I'm often up for a couple hours in the middle of the night & may turn up the thermostat a couple degrees. Of course in summer tanks are warmer although we use AC to 75-76-ish during the day.

Thank goodness we have solar panels! Our electric power is high here as are our summer temps. But we only pay~$30/mo for "distribution fees" & gas hot water...& we have a pool too. Off topic, but our best investment for $$ & the environment too (smug smile)