cag2
11/14/2014, 04:54 PM
I have had my 150g reef up for about 5 months now and have stable fish livestock and newly placed corals. My problem is with the center internal overflow. I have a 1" drain and 3/4" return. The returns exit the overflow beneath the teeth of the overflow. I currently have a durso setup with a ball valve between the drain exit and the sump. I have a sicca 5 return pump in a emerald trigger sump. It has been difficult to match drain volume with pump return volume. The durso intermittently makes the dreaded gurgling sound throughout the day. It will be quiet for a couple hours then start. I have noticed that it will quiet down when I replace the evaporated surface water, but only temporarilly, about 30 min. I have ant ATO intalled in the sump. I'm going to change to a HGB. Don't want to take down the tank to install a Herbie system. Before I do I was wondering if placement of the silencer, whichever, makes a difference?