Sooo today I drained my 55gal to get the treatment out for one fish and get ready to treat another fish for something else. Well I un-plugged 2 plugs thinking it was my heater and pump... oh man was I wrong. So I get the tank drained pretty low and here this sizzle noise. A few second and I realized the noise was a heater. I went to try to unplug it and grabed it to pull it out of the tank and the wire slipped and the heater went into the tank. I got so incredibly lucky that I had the wire and ripped it out b/c the second it hit the water if sparked and cracked then blew up a bunch of smoke but It didnt shock the tank/water or me, thank gosh. I felt so stupid... next time I will make sure I just unplug everything. The other plug I pulled was to my lights. 
So what you can gain.. Always remeber to just unplug it all!!

So what you can gain.. Always remeber to just unplug it all!!