I can't stop my skimmer producing bubbles when it returns the water to the tank. I've fiddled and fiddled for two months now, tweaking the 'ingenious' (that's what the leaflet said!) plastic gadget every which way its physically possible to do and still the £$%^^&$%& thing chucks out bubbles. The lfs has the same model and not a bubble in sight. What on earth am i doing wrong? Can anyone help, its driving me crazy?
Thank you!

Thank you!