ALAS! i have figured out the source of all my tank woes. i figured it out when i came downstairs to 30 some odd gallons of saltwater on the floor and a brackish water tank (thank you tunze osmolator). so as i'm cleaning up the pond in my dining room, and thanking the good Lord for GFCI's it occurred to me that the only reason my tank could be taking such a dumper is an act of God.

for two years: no problems at all.