On the three pin/w shown above:
The white one: 17scfh 19w
The black MSX one : 23.3 scfh 20w
The new purple one: 29.6scfh 21w
One thing I noticed was that this pin/w seems to keep a consistant column of bubbles/ foam.. it is not affected by feedings as much as my mesh wheels are.. I really like this new wheel.. no BS!
The number is lower than my mesh/w , but the best performance is not always with the higher #'s..
I have 2 sicce mesh/w ( 3 if you count the quietone impleller that can fit) ... Just prior to getting this pin/w, I found that I liked one that was doing 32-33scfh over the 40scfh one..
One of the skimmers I have always liked, is the Deltec 701, Its pin/w can do 34scfh, but it works best, when air is throttled down a bit -- to 23scfh! (Deltec puts a Valve on airline just to do this!)
(I have been around many Deltecs in operation) ( spent hours just sitting watching a 702 do its thing.. No BS)