hartman413
Member
ok guys here is my 411. i made my own overflow. The demi's are exact to a 600 gph u-tube overflow. i am using a 1700 rio... and here is my problem with my rio wide open and nothing blocking my drain tube to much air flows down the tube and it makes a burbing sound. if i block the drain tube and try to tone down my rio i get a overflow. here is my question is there is a way to quite down my overflow box and still have plenty of flow