got home from work today and noticed that my FH tank was unusually still. flicked on the light and...BAM...my 7in. female golden goddess is lying on the bottom of the tank...dead...i see her mate an 10in. male red dragon off in the corner, floating upside down, barely breathing...a poweroutage knocked my filter out and for some reason it didn't restart (usually does) the tank had no areation/filtraton for 9 hours at the most. i restarted the filter and dropped an airstone into the tank, but my big RD is still having problems getting oriented, he bobs around the tank gasping for air, similiar to a swim bladder infection. it's been 3 hours so far, i've been constantly watching him but he isn't getting any better. water parms are the norm for this tank, NO2 .0 , PH 7.5, NO3 5ppm. i'm thinking of doing a 20% WC, but i afraid that might make it worse. can an oxygen deprived tank cause this? anyone have any suggestions on what else i can do?