[i have crabs]

aquaclear 110 carbon fits right in the chamber where the bio balls are, i took out half the bioballs and put in floss and a carbon on top of the bio balls and put a piece of floss on top of the tray above the bioballs to quiet it down a bit,and i also put a sponge in where the carbon cartridge was.
im concidering building 2 closed loops with some mj1200's and buying a inline heater so i can hide everything in the back,right now i have a seio820 and a ebojagger heater taking up valuable property