i have a 55 gallon tank with cichlids in it and the tank is stocked somewhat heavy. right know i have a emperor 400 power filter, aqueon 55 power filter, and a 80 gallon sponge filter. the aqueon filter sucks it came with the tank and i started going threw a set of media every two weeks. well im tired of buying media for the filter they are so expensice and i want to get ride of it. my question is should i replace that filter with something else or so i just not get a new one to replace it since i have the other 2 filters.