socalracer
Member
have a 100g tank with the bioballs built into the back and i wanted to know should there be a filter before and after the balls or are the bio balls fine without it. also the tank i purchased is or like the seaclear system 2, it has a wet dry built into the back and since i bought the tank used i don't know how to set it up(what chamber the balls go into). so any help or pics would really help.