Here is my trick for berserk skimmers. Mix up salt water. Turn on skimmer. Let it fill the cup. Turn off skimmer. Empty cup. Use your saltwater to replace saltwater Lost by skimming. Turn on skimmer and repeat. After about 10 - 20 iterations, the skimmer should settle down. Whatever the chemical is in the epoxy is being removed by skimming. By repeatedly tossing out the skim-mate and replacing the lost water, you are removing the offending chemical. As a bonus, you are doing a minor water change.
