yes...the pumps are about the same size I believe (b/n the CSS65 and the remora)....the remora uses a maxijet 1200 with a venturi adapter, which may be a tad smaller. I ran a similar pump (MJ 600) on an in-sump DIY remora....they can pump some serious bubbles (the skimmer design wasn't QUITE right, and I didn't feel like building another one so I sprung for a used CSS65 $80 shipped). Lots of user info comparing the remora and the CSS.
The Deltec is in another league performance wise and price wise.