Sorry to hear.
That is my very worst fear. Every morning when I wake up I swear I here a noise and think it is the tank.
it's a AGA 75g from petsmart - they don't seem to have it on their website.
Furnace guy came and serviced it and checked for sand/water in vents. He fixed my water heater. The previous crew put a industrial fan pointed right at the base of my water heater and it blew out my pilot light. Morning cold showers suck! Then I could not get it re-lit. I guess he had to replace the whole gas junction/pilot light because it was left hand threads and he only deals with right hand threaded pilots. At least it is working now. The hard wood floors are still wet and they are just going to tear them up and replace them.
I know this has nothing to do with fish so I probably wont be on this site much if at all. I have a empty feeling every time I come here now.