Hi guys... ive had this skimmer for about 2 weeks now and it has not produced any foam in the cup but there is brown gunk in there. Does anyone else have this skimmer and maybe can guide me on what to do to have this skim properly please? Since ive had it i havent seen any foam in the cup at all but i do see foam at the bottom part. Here are some pics.
the foam stops right to the top.

