SWC 250 S2 Skimmer mods

[FishyFishy!]

I picked up a used SWC 250 S2 Extreme from a canreef member for my new 7 foot / fishroom build. The dual Sicce PSK2500 pumps work ok, but have startup issues as usual. Not too worried about that, but I will do a single Askoll pump mod eventually (whenever I find an extra $300 to spend on one).

But I want to do a gate valve mod on the water return pipe, as I have heard that the wedge pipe design makes it very finicky to adjust. I can't find any threads anywhere about modding this model (or similar models).

Does anyone know where I would put the gate valve in order to do a proper mod on it?

This is the skimmer.


Here is where I would assume that it goes, and just cut off the bottom of the wedge pipe flat.




Any suggestions? Tips or tricks?