haha, the LFS i worked at had multiple tanks running off one vat with a monster filter and heater. the tropicals consisted on 3000+ gals and 39 tabks running off the same vat. the heater shorted out and we unplugged it after it electricuted me. we used submersibles for a long time before the electricial came. he got there and plugged it in and said "aint nothing wronge with it, i plugged it in and it works". i told him to 'feel how hot the water is!'. he put his hand in the water and knocked his *** to the floor! "see, i told you it was broke!"