240g FO moved a month ago with all fish, rock, 50% of the water. Weekly water changes of about 40-50 gal. Got a custom sump set up 1 week ago. Until this time the skimmer was only producing a small amount of brownish bubbles. I was thinking that I probably needed to shop for a new skimmer at MACNA. Did a water change on Sunday and increased the amount of water in the sump. The skimmer started working like it should BUT the stuff is aqua blue. Any idea what might be causing this? Also - can anyone identify the mnfg. of this older skimmer?


