Listen to Tolak, those filters are quite good, and you can be flexible with what media you want to run. Most others are restricted when it comes to media choices.
Just watch the little fish around the intake. Small fish can easily get stuck in the intake as my poor departed Peppered Cory can attest. (RIP) I solved this by cutting a slit in a block of Aqua Clear 20 foam media and pulling it over the intake pipe.