Hi,
I am new here. This is my first post.
I have a UG filter in my 135 gallon. actually it is four separate plates.
I use them in a reverse flow system. tank floor is drilled in four places.
each pair of holes is y connected to a Magnum 350 outlet. so I actually have two Magnum 350's in the cabinet. each canister has the inlet (pickup) in the rear corners of the tank. So all the "crap" is floated up away from the gravel and then sucked into the canisters. I allso have two "Aquaclear 500's" box filters hung on the back.
Harry S.