Hi I just finished my fish rack/wall and I'm planning on using air filters it will hold 8 ten gallons and 3 twenty gallons and I will do one more just like this one by the end of spring or the beginning of summer. I'm going with the linear piston air pump they sell here,my question is why a loop is need it? I know I won't be expanding I have one wall and that is all I got , that see to be the reason everyone mention ,if I set just a line across the ceiling will there be a problem? Or how big does that loop needs to be? I don't want it to go around the whole room. Thanks in advance.
Rey
