I recently added a Prism skimmer to my 30g reef tank and I am noticing a clear oily transparent film on top of my water surface. It just recently happened after adding the skimmer. I will test my water params tonight but any clue what it could be? Finally I don't have much surface movement more movement under the water. Any clue as to what I could add to help this? I am worried there isn't enough oxygen in the water could this be a probleme???
Thanx in advance b
Thanx in advance b
