My fish seem to be breathing quicker than what I feel is a normal rate. No other signs of stress that I can see. Some slight aggression in tank. I know some of the fish in my tank may not work out long term but I don't think that's part of my current issue but always willing to listen to advice. Parameters are in pics. 150 gallon. Fish: 3 Oscar's, macaw, rainbow shark, common pleco, Dempsey, fire mouth, jewel, yellow lab, ob, pictus, chocolate, parot. All fish around 3-6 months old roughly. Filters: internal 40 gallon, fluval 305, 107, double stacked medium coop sponge filter with air stone, 1 small circulation pump running while the lights are on about 12 hours a day. Not running any chemical filtration or adding anything to the tap water. Ph is this high out of the tap.Temp 78. Fish are overall pretty calm most of the time, no lip locking or any injuries. Just the occasional 1-3 second chase. Feeding mostly big fella. The tanks been running about 2 months since last tare down.
Any thoughts on the rapid breathing? Seems to be all fish equally. Not gasping near the top, just faster breathing everywhere in the tank. I tried to take a video but the file type wasn't allowed even when going directly to "camcorder" from attach files. Thanks for your time!