dumbest thing i did was a few years ago. . . it was a hot summer in the U.K. and was busy with work and i forgot to empty ny bin and it room was getting smelly. the windows in the house was all open and there was a nice summery breeze circulating in the room. . . couldnt stand the smell of my fowl smelling room so i got a can of air freshener and sprayed it everywhere to get rid of the smell and some made its way into my aquarium. within half an hour 16 of my clown loaches died, some angels and a shoal of rummy nose tetras were wiped out. . . i was devistated and since that day onwards i never spray anything near my aquariums ever again. im still gutted to this very day cos i always wonder if they hadnt died, what would they of looked like now?