Thanks guys. The bubble stop foam is on the outlet pipe but they just seem to get blown out the bottom. I must admit I don't really understand how it should be set up correctly as I have never had a skimmer before. In the centre of the collection cup is a conical spout. Should be bubbles be bubbling at the base of this spout or foaming over?
The instructions tell you to open the flow once its running and adjust the bubbles accordingly. If I open the flow valve, immaterial of how much air is being pumped into the unit, the water pours out of the spout and into the collection cup which is obviously wrong. The more air I put in, the lower the water lever in the conical spout....
I am assuming that we want to have the water level at the bottom of the conical spout with the bubbles gradually rising up the spout and into the collection cup?
Sorry if I'm being really dumb about this!!