[titus]

Hello,

Ah Doug is right. I remembered when I made my new sump, I offsetted the Beckett to the other end of the sump, a few feet away from the skimmer. I used a 3/4" pipe but no bubbles were produced, until I swapped it for a 1" or 1-1/4" pipe. Can't remember. Gave my setup away. lol.

Anyway, if you design and build skimmers, you'd notice that the relative location of the injector is quite important as well. This is because the Beckett can't take much back pressure itself.

Titus