Surface Oil Film
I have read a bunch of posts on this subject but never seem this problem...
I have the whitish oil film on the top of my tank, so I bought a surface skimmer and hooked it up to a MJ-600. Within an hour or so it was completely gone. The skimmer has been running for about 2 weeks and the film is back, even with the skimmer.
Does anyone have any ideas on this? It just seems odd.