Ahh, so glad to see some information on this! I'm just trying one out for the first time. :)
Is there a way to decrease the flow/disruption to the water from the sponge filter? I've gone really home-ec with this and made one myself from sponge, an airstone, and a bubbler. (more as an experiment than anything else)
I've wrapped the thing in plastic mesh (like what many use as dividers) and then covered it all with a knee high, but there's still a fair amount of water movement from it. Any way to change that, or is that just the norm for a sponge filter?