Skimmer Question: Euro Reef RC180 vs RC250

[under10minutes]

I was doing a comparison of the skimmer i currently use vs the model which is one teir higher. It appears the only difference is height of the unit (water mass) and the air intake. Can someone explain how these two things change the rating? Below are the specs for both units. Information found on aquacave.com. .....and does anyone know what "comparative Rating" is?


Euro-Reef RC180 Specifications:

- Rated for aquarium systems of +/- 180 gallons with a medium bioload
- Comparative Rating: 450+gal.
- Footprint/ sump space required for skimmer: 9" x 20"
- Height: 24"
- Reaction chamber diameter: 8"
- Inlet sizes: 3/4 "
- Outlet size: 1.25"
- Pumps (included): 1 x SP-5, 40W
- Air intake: 960 lph

Euro-Reef RC250 Specifications:

- Rated for aquarium systems of +/- 250 gallons with a medium bioload
- Comparative Rating: 550+gal.
- Footprint/ sump space required for skimmer: 9" x 22"
- Height: 30"
- Reaction chamber diameter: 8"
- Inlet sizes: 3/4 "
- Outlet size: 1.25"
- Pumps (included): 1 x SP-5, 40W
- Air intake: 900 lph

 

[NYreefNoob]

lol shoot me a pm with # and ill try to give you a call, easier to explain then try and type it out.
ive questioned several manufactures in reguards to this subject and was given a b.s reply from the companies that did reply