i run 1 of those and i know they recommend a mag 7 pump. not sure what mine is, lfs sold me there extra RO pump for $20
![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
. it took me a little tweaking on the te adapter to get it to seat right on the pump intake and the hose connecting the pump to the skimmer is sensitive as well, mine needs to be shooting water out of the skimmer intake back into the sump at a good clip to work right. once i had these 2 things figured out i really like the skimmer, however until i did i was quite frustrated.