Bifferwine
I am a girl
- Location
- Lynnwood, WA and missing Tucson, AZ
Some skimmers sit outside of the sump, on the floor next to the tank. You have to have a pump in the sump bringing water to the skimmer, and then skimmer shoots it back into the sump. I have one, it's a recirculating Octopus skimmer. They are more expensive than in-sump or HOB skimmers because you have to buy the extra pump for them.