i am setting up a sump for my 180 gallon tank. the sump will be a 75 gallon tank. the water outlet from the overflow is through 2 inch pipe. the opening of the first compartment of the sump is 18 X 12 ''. i am going to add a mechanical chamber and a wet dry section on top of this first compartment (probably will be of the same size as the compartment itself). i am looking for idea of how to best distribute the drain water so that it would spray evenly on the mechanical filter media. any idea guys?