I've got an aqua-tech (walmart) 20-40 filter that needs an impeller assembly. I got the tank used and the filter came with a dozen or so extra cartridges, so I'd like to keep the filter, but I can't stand the noise it makes. I called about an impeller assembly today, and was quoted $19(!) for just the impeller. I have heard it's possible to add a biowheel from the penguin 170 to this filter, so I am wondering if other parts of the filters interchange, cartridges or impellers especially
Has anyone replaced an aqua-tech impeller with one from a penguin? Do the aqua-tech cartridges fit the penguin if I have to go that route? I need some other things, so ordering a new filter is about as cost effective as just replacing this impeller, unless the $7.50 penguin impeller will work. Thanks a lot for your help.
