Sea Turtle
Fish Crazy
Hi everyone. I have a 75 gallon reef tank. I drilled a hole at the top of my tank and hanged an overflow box. The bulkhead going through it is 1-1/2" pvc pipe that elbows 90 degrees down then another 90 degrees in an then another 90 down into the sump via a filter bag. My problem is, is that when the water enters the bulkhead drain at the tank level, it sounds like a dishwasher. Very loud!!! I have tried restricting the flow at the bulhead a bit but then it makes a sucking noise as it draws air through a funnel in the water. I really can't seem to figure this out. Here is a diagram of my set up.