Thread: Will this work?

I have a venturi canister but just noticed that some other pump canisters have something in this area:



Is it a filter or? Do I need that to have the canister function properly?

It was not there when I bought it. I just didn't notice it until now. Guess the dude who sold it to me on here (Whom I don't know his name because I cleared my in/out box) ripped me off.

Looks like I need one if anyone has an extra. lol