outcasts9
New Member
I have a 120 gallon tank right now with lace rock and aragonite. And I have a pvc piping that leads from the tank to a nu-clear filter and back up. My problem is that this system is pressurized ( i have a pressurized pump) and when ever i turn the filter on the and burp the filter so the water rises, it will slowly lower back down to about 1/4 of the way full and the outake will just shoot out bubbles and my tank will be full of them by overnight. why does it keep lowering?