I have a 75 gallon corner flow reef tank with versa tops, about 170lbs of live rock 90lbs of live sand. Eshopps 100 sump with 20lbs of crushed coral with a second home made sump that's about 8 gallons with an algae scrubber and a 36 watt uv sterilizer. I was researching how to add more oxygen in the tank to be able to add more fish than one inch per fluid gallon. I read that versa tops hold in the gases and doesn't let the water oxygenate which lowers the ph. That seems to be true because my ph is always dropping. Should I keep the tops or get ride of them.