it will damage the tank leaving it on without water in the long run, but that tank is hosed anyway (pun intended). Not a problem of a fire, just burning out an element. If it's a gas heater then definitely turn off the gas and pilot, if it's electric, then I'd leave it. Sorry to hear that, tanks suck. It does offer the opportunity for a selection on what to replace it with type conversation though. Any thoughts on was it fulfilling your needs before and what type was it?
"There ought to be a term that would designate those who actually follow the teachings of Jesus, since the word 'Christian' has been largely divorced from those teachings, and so polluted by fundamentalists that it has come to connote their polar opposite: intolerance, vindictive hatred, and bigotry." -- Philip Stater, Huffington Post
always working on cleaning my windows- me regarding Johari
always working on cleaning my windows- me regarding Johari