Plumbing drawing?
Well... it's just a straight line from my pump to the 4 exits of the jets... and these are connected as in the images before...
Schematic its here:


Real images:


A video is here:
Jets-Piping.mp4

Really upsetting this thing!
About pump and flow ... I really doubt it's not strong enough as I've also tried to close 3 routes and left a line to 2 jets only... this 2HP pump is not enough for 2 jets?! Still no bubbles... just a very strong water stream...
I'm thinking about connecting the blower but I doubt it will be enough for even just 1 set of 2 jets...
I have to get some bubbles Darn IT!