My skimmers always seem to have a bit of a 'reaction' to an addition of food (or my arm) to the tank. Even rinsed frozen foods. Usually the bubbles stop forming a stable foam for a little while but sometimes it seems to create an overflow of wet foam into the collection cup. Depends whats going into the tank. Two part aquastick type epoxy makes my skimmers really go crazy and I have to turn the flow down for a while.
Joe
ps. Looks like we have half the STARBLAZER's crew on this thread's avatars lol.