I did a water change last week. I usually do water once a week.I do not think the temp is your problem. As long as water moves it is oxygenated. When was the last time you did a water change.
The Mammons are fat but the red monkey is not. There are little guys in the tank that Are breathing heavy also. Check out the video.They are breathing so hard because they are SOOOOO overweight. Seriously no offense to people, but have you noticed overweight people breathing hard all the time?
I will check when I get home from work.So what is the ammonia reading?
It takes like a minute to check that. I agree that this is most likely the issue.