| yeah I thought of that I put it on some cooler foam it helped a little I was also thinking about sound dampening material but think that might be a fire waiting to happen. I am thinking I will probably try a differant external maybe one not so powerful. Right now I have the throttle valve opened about 1/4 anymore and I get the water rising and dumping in the overflow. Whats a good return flow rate for a 75gl? | 
