Thats the water return. The water comes back from the sump and then goes into that chamber where it naturally overflows back to the tank. It makes for a silent and great look down tank.
We got some Wam'n Watermelon zoas from Estoniangirl yesterday, I fragged three polyps for Seth's tank and 3 for mine. Thank you again for these wonderful frags and that freebie!
Ooookay, so yesterday I picked up our Cherry Corals order, thank you Todd btw, OMG, I am IN LOVE with my pink nebulas and my pink zoas!! And we picked up our zoa pack from Luisse yesterday. Thank you!!