I have been fighting with trying to hook up a rather large beckett type skimmer that is powered by a blueline 55 pump. I am using a AGA megaflow 4 sump as a refugium. The filtration return is being pumped with a turbo-sea 1740p pump. I am returning the water from the skimmer into the far end of the sump. I have several layers of foam to try to stop the micro bubbles. All this does is cut down the flow from the fuge to the return area and more bubbles. I am baffled or not as the case may be. I will try to post pics later. Anyone else having issues with microbubbles from their skimmer?