Just curious, sorry to hijack the thread. I have a durso standpipe, 1.5" drain. After the drain, it splits into dual 1" hoses that go to my sump. The only noises I ever really hear are the actual sound of water moving throughout the hoses. No gurgling, no air, just water movement. Would switching to herbie change this, or is the water movement sound pretty normal? And if I wanted to switch to herbie, how would I do it?