Has anyone had experience with these filters? Im kinda torn at the moment, I have an Eheim 2217 filter and internal Juwel filter inside my 180l tank. The Eheim has a spray bar attached to it currently. My friend suggested that I abandoned both filters and install a Huey Hung sponge filter. My tank consists of 25 cardinals, 2 rams, 10 corys and 1 discus. Its a low tech set up and has plants within it. However his knowledge is based on keeping discus fish as I know they prefer less disturbance in the water. He commented on this because I was sourcing a more powerful filter as my Eheim 2217 I felt wasnt giving me enough over flitration as some people have mentioned. What are your views or experiences with the HH Filters?