I just set up a new to me (purchased used) 110 gallon tank. IT came with a G3 protein skimmer. I've had it up and running for a month. I can't not get it to fill the top with scum/bubbles. I've played with the tube by turning it and moving it up/down. There are bubbles in the body of the skimmer and going up in the center of the cup (top) but it isn't bubbling over into the cup (or foaming). I have not taken the pump apart yet. I might this weekend but I don't know what I would be looking for?? Does the impeller get worn out and make the right size or amount of bubbles?
The overflow tube is pretty loud (splashing water) and seems to have a lot of flow.
The overflow tube is pretty loud (splashing water) and seems to have a lot of flow.