Originally Posted by bloodlamb

Does this design also has a center tube?

I prefer design which do not have it so that it is easier to load. It seems to have many tumb screws to turn also. Always wonder why item made comercially cannot have a better design.

I got one from bio ocean during aquarama. I like the design, small and compact. Do not have the center pipe like Resun it replaces. The aquamarine FR design (skimz) is similar to the bio ocean except that is has a box to support the base.

How do you think the phosban compare to them?

I saw in a magazine that kent marine also have a FR. Has a cover that do not uses thumb screws.