Yea, I was thinking the same thing. I did lower the temp to 76 degrees over a period of 4 hours and the one silver dollar was still at the top gasping for air. For filtration, I'm running an AquaClear 300 which is more then enough for a 33 gal
. But if it was in fact the temp. causing low oxygen levels, why would only 1 of the silver dollars be up top gasping? I was also thinking it might of came sick from the store, maybe with ich all up in the gills...not really sure what happened.
Well today when I woke up the fish was pretty much done. It was sitting at the bottom tilting up against the wall of the aquarium. I transfered it to a bucket with 10% aquarium water and the rest with fresh water. He was sitting at the bottom not moving. Probably will not survive...but we'll see when I get home.
Thanks for the help.