Originally Posted by paulr
I believe so. It goes right ahead of where the water is pulled in the pump.
I tossed mine from day 1. Never had any issues. If your going to run something like the inTank fuge then I'd recommend adding at least some poly floss to help catch any debris from your macro algae, if your not running macro or anything then don't worry and just toss it. You need to clean it often and it becomes a nitrAte breeding ground.
My tank is a year old soon and doing great without it. Chamber 2 has the inTank media rack and some live rock rubble.
Just to add I do have a upgraded pump, the maxi jet 1200.