Hi there,
What I had was the Fission Nano Skimmer and it was more trouble that it was worth. However I have been considering the Remora, unless I just build my own skimmer.
What I have done to the filtration is.
1.Upgraded main pump to a Rio 1200.
2. Replaced blue sponges with Filter Floss (the filter floss can be thrown away more easily than the blue sponges and traps smaller matter, you can also get synthetic Quilt Batting at a fabric store if they dont have it at your LFS, I roll it into a 4 in diameter tube and slide it into where the blue sponges used to be.
3. Removed all of the covers on the intake grates that are in front of the blue sponges.
4. Slowly week by week added LR rubble, about two pounds at a time. (Only started recently and therefore left in the ceramic bio rings so that the tank wouldnt cycle because of lack of bacteria, but removed the bio balls)
5. Added large bag of carbon and a 'catchall pad' that takes out phosphates from fish waste, ammonia, and nitrite just to be sure.
I will be investigating the other HOB skimmers considering I need pristine water for my clams and acroporas. Let me know if I can help you with anything else!