Protein Skimmer

[jbird0420]

I'm trying to understand the theory behind this protein skimmer. With the adjustment pipe extended to the top of the skimmer and it being "T-ed" off with another pipe going down into the water. Does the pressure force water up through the top of the adjustment pipe? Or does it go through the T and down the return pipe back to the water? Anyone with this type of skimmer please let me know. I'm thinking about converting my skimmer to this style.

 

[faqbch99]

The water will come out the bottom pipe, the pipe that extends up to the top is a air excape. The thought is it cuts down on the micobubbles sent out the output pipe back to the sump.

 

[jbird0420]

In order to get it to foam correctly, is there a certain height the adjustment pipe has to be set at? From the looks of that pic, the pipe is extended to the top of the skimmer.