It's suppost to go after the skimmer before the return pump. I was messing around and figured it made the noise less. So I kept the idea ... no more water fallIn the peninsula version that bubble sponge is in the chamber afterwards that runs parallel and back to the return chamber.
Though, as I think about it...thats just where it was was I received it. Is that where it's supposed to go? Waterbox instructions/photos exclude it altogether. It does conveniently also fit where you have it and does make a big difference. I had always assumed it was to eliminate bubbles from the skimmer chamber going to the return...all my prior sumps have had a similar setup.
Either way, I might just buy some other sponge for the post skimmer chamber and keep it they way you have it with the provided one.
Thanks!
I had some extra filters from a pervious build...
I really wanna block off that back long compartment to the socks and redo my plumbing already lol