Hi all. 55 gal. FOWLR no fish yet still cycling the tank. Have done a few water changes all is well. Added a CPR Refugium with built in skimmer. With that addition I did a partial water change. The skimmer is collecting lots of foam or bubbles ???? When they enter the cup and settle it is clear water filling up the cup ?? On CPR web site under troubleshooting it states that with a new tank and or new water added it can cause this and after some time it will quit ???? What do you think. How do you adjust the cup level ?? For less collection do I raise it or lower nothing seems to help ?? Thanks again.