Wow do I feel like an arse
I bought this skimmer used and had no idea what the inside of the venturi was supposed to look like
Skimz used 2 different colors of plastic, so the build up of calcium in the venturi looked normal to me
Add a piece of food, algae or a small snail and overflow was imminent
A clean with vinegar and some elbow grease and wouldn't you know it, it's pulling some serious nog again
Think I'll have to change the location of my drip
, and my weekly cleaning of the cup will now include the venturi