OK...... If it is a salt tank, you will get foamy bubbles ANYTIME there is turbulence. In fact, the very purpose of a protein skimmer is to create foam (which attracts proteinaceous waste and is removed from the system).
If this is a salt tank, that is absolutely NORMAL. The difference in density between salt and fresh explains why one foams and the other does not.
Once the PS gets dialed in the bubbles should stop. It took a few days for me to get my PS working properlly and stop w/adding extra bubbles to the tank.
Once the PS gets dialed in the bubbles should stop. It took a few days for me to get my PS working properlly and stop w/adding extra bubbles to the tank.
If you are talking about the bubbles in the prefilter area that is completely normal. If you are talking about bubbles in your tank, it is normal also but there are things you can do about it. I have had my skimmer discharge through foam or baffles.