Winter is coming and I'm considering switching to using heat tape for all my tanks. In the past I've always used a combination of extra heat pads, space heaters, and had the house heat turned up. But, I was wondering about just buying a spool of heat tape and running it under all my tanks. Anybody use it with glass aquariums or wooden enclosures? Would it be a more feasible route to go? Is it even easy to buy a whole spool (ie, 100ft) of heat tape without having to pay by the foot? or, what about heat cabling used for out door pipes in the winter time? Could that be a more efficient and cheaper route then heat tape?