Over the past week my protein skimmer has stopped producing bubbles, and I have no idea why. I bought it second hand and it's always just worked, producing lots of bubbles regardless what position I have the knobs set. I've tried adjusting the knobs and there are still no bubbles in the skimmer. One change in the system is the small white outlet (has the blue knob on top) has been spouting out water, which it's never done before.
Any ideas what I should adjust or fix to get my skimmer working again.
Thanks!!!
Any ideas what I should adjust or fix to get my skimmer working again.
Thanks!!!