I think he asks because all of the products have warnings on them to turn everything off before messing with the tank. It's really just so when the one in a billion accident happens, they can't get sued. I don't turn anything off.
CHOMPERS;2120795; said:To measure the voltage leakage in your tank, make sure everything is on, then using a multimeter, place one probe in the ground slot of your outlet and put the other probe in the water.
tonymofo;2120620; said:Do you turn off everything (Heater, Filter, Powerheads, etc) before you stick your hand in the tank???