It is usually cheaper to heat the whole room, rather then just the tank. A basement shouldn't be that cold as a rule. The ground should keep a constant temp in the mid 60's. It may be a matter of sealing it better.
How long does it take a tub of hot water to go cold?
Ahhh, I see what all you mean.. Well, will do the styrofoam thing anyway and the blanket method lol
I was thinking aswell what if I got like 2x 25watt heaters for my 100 gal and just let them run all day ? And a single 25watt for my 20gal and let it run all day too? From my calculations works out cheaper.. As per day we use about 10-13KW in the house!
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