We are having problems keeping oxygen in our tank. We have a bubble bar in the back of the tanks that produces a lot of bubbles and breaks the surface but when we turn off the bubbles our fish seem to be gasping for air. We turned it off last night at around 5pm and by this morning 9am all of the fish were at the top of the tank, it looked like they were all trying to escape. We immediately turned on the air and even slapped the top of the water to break the surface (was told that’s how to get air in fast) Right now we are emptying our 50% of the water to see if something in the water is stopping air from staying in. How can I keep the water oxygenated? Any ideas?
hrh
hrh