I don't know what it is but the filter on my 5 gallon Eclipse doesn't seem to be moving much water at all. I pulled the impeller, scrubbed all the gunk off, ran some hot water into the impeller area and still not much more than a trickle from the output. I placed some filter sponge in the intake guard, rather than placing a sponge over the intake (which I think looks tacky), to prevent any shrimp from being sucked in. Thing is, the filter flow isn't any better with the sponge removed.
Any ideas for replacements or how to make this one perform better?

Any ideas for replacements or how to make this one perform better?
