I think you are totally fine with adding 10ish more. With that ARO tho, i would eventually get more filtration. Sponges are great. There is this post i just read about how this guy turned one of the old EHIEM filters into a monster canister filter. GOOD read, and it would probably provide a significant amount of filtration to your 180. The GPH WAS LIKE 1000gph on the pump.
If you want madness in the form of CLs....... bigger filtration.
HERES THE LINK, LOOKS PRETTY COOL:
http://www.monsterfishkeepers.com/forums/showthread.php?t=189979
If you want madness in the form of CLs....... bigger filtration.
HERES THE LINK, LOOKS PRETTY COOL:
http://www.monsterfishkeepers.com/forums/showthread.php?t=189979


