I am using a weipro 2012 and ataman pump 2000 l/h. Not much foam but working. Looking high and low for solution to improve the skimming.

One theory is to remove the sponge from the outlet which I did but not much different. Adjusted the knob and it is almost 40% where the water line is just near the base of the collection cup.

Chuisui no body is talking about weipro nor weipro site because the last query wasn't even responded.

I guess all weipro users need to join hand to help each other. I am thinking of adding one more air tube to my ataman pump (It does come with this provision). That is, my weipro will have two air intake instead of one.