I don't know if this is common knowledge, but the Eshopps nano skimmer fits into the back of the 25g lagoon second chamber without any modifications whatsoever. After doing a bunch of research and looking at a few different forums, no one recommended this skimmer as one that fit and I was debating on going with the IM desktop skimmer or the Tunze 9001 and modifying the return chamber a bit. I happened to see one setup with the Eshopps skimmer on google images and decided to give it a try and it has worked perfectly! Very happy with my purchase.


