So most of my fish are hanging out near the surface tonight. I can't find anything obviously wrong, so I know I should just relax, but it is so noticeable that even my non-fish hobbits husband commented on it. 34 gallons, ammonia = 0, nitrites =0, nitrates = 10. As of testing 30 min ago. 2 guppy, 2 platy, 3? Cory (unsure if count, it used to be 6), 2 honey gourami, 5 Cardinal tetras, 1 mystery snail (also near the surface) and 6 Nerites. I dosed Prime today before testing. My tap water is showing 1-2 ppm of ammonia (and nitrites = 5) so I dose for a few days after a water change. Last water change was Thursday night but I wasn't sure if I would have time to trst, so I dosed just in case. Filter is running (can see ripples on surface from canister output). Tank is at 78, it usually holds at 77.