i have a 75 gallon tank with an oscar and a jack dempsey(electric blue, beautiful fish) but my question is this. i have 2 emporer 400 filters on the tank, and the oscar feces gets sucked right up to the intake and sticks there, now I am sure this is probably better than going ahead into the filter and causing more frequent cartridge changes, but is it???? it is very unsitely and make the tank look dirty when actually it's not, i clean the tank once a week, and change the cartridges every other cleaning. wonder what some other oscar owners due in this situation? cut the slots bigger on the intake? some kind of intank filter?