rabbut
I don't bite, all that often...
memory served wrong. It's a pro2 then.....
Don't worry about media seporation, it comes with baskets.... 
Don't worry about media seporation, it comes with baskets.... 
Don't worry about media seporation, it comes with baskets.... 
The ability to draw water into the chambers without you sucking on a hose to syphon water into the canister. A luxury which was not afforded to us olduns in the early days. Yes I've swallowed aquarium water by the bucket load. LOLI was wondering what is priming?
They go in-line removing the heater from the tank, instead putting it into the filter return pipe. They are more efficient watt-for-watt than conventional internals, as they are "active" heaters rather than "passive" ones I.E. cool water is pumped to them for heating rather than relying on convection in the tank...

much appreciated..