Toxic help

[xblade]

Oil and water when mixed up and airated in your skimmer would have produced a milky looking foam. That's probably what happened.

[DNoakes]

yes it did. it was a white milky substance in the on top of the sump and in the skimmer it was a milky substance and would not skim. As a matter of fact it wouldn't skim for about two weeks. I had to thoroughly clean my whole system up and scrub my sump down as well as my skimmer.