my fish died i have two left the water temp is 76 by the stick on therm buy my mec therm ses 68 what do i do

76 is about perfect for an oscar. that isnt the reason they died. there is something else at work here. can you post your water parameters? how long have you had the tank? is it properly cycled? are there white spots or fuzz on the fish, or do the fins have fungus on them? what are your nitrates, nitrites, and amonia at?

my macanecal ther ses 68 tho.one of the is wrong

How long have you had your filter running?

my filter is good the tank water is to cold 68

How long has your filter been running?
O's can survive any temp above 57,2, so thats not the problem I think.

its been running good for 4 months two fish are strong but the one has been slugest and laying on the bottem alot. water is cleen and clear

Do you have a test set, and if yes what are your Nitates, nitrites and ammonia readings?
How often do you change water and how much?

no i dont have a test set i did a full tank cleen 3 days ago but the one fish was doing this befor the change the other two are doing great i do a 1/4 chang ever one to two weeks if needed

Ok, do you have any other fish in the tank?
When you say full tank clean, you mean replace all the water, or a part?
Did you use any soap?
How big is your filter?Did you clean the filter too?
I think it's best to get a liquid test set, so we can rule out bad water quality.

replaced all water cleand rocks and plants NO SOAP just cold water filter is for a 55 gal and renced it out too. two other oscers are doing just fine

thanks for the help all but the fish is gone all i can do is watch the others