I have the TMC habitat 60, the overflow is noisy and I adjust the ball valve literally tiny amounts and the tank level is either too low, or it's noisy. How do I stop this? If I have the water level so high its flows down the overflow hard is bubbles in the sump like its throwing down loads of air, so I have it barely going over and just have a trickling noise. Super annoying. Any help on experience with this would be awesome