Help Berlin Skimmer flowing over every 5min.

[katfish50]

I have a berlin skimmer in my 60 gal.. Every Weds. I shut it down for about two hours when I feed my corals. This morning lots of tiny bubbles and my skimmer cup was foaming over...It did this last week and I emptied cup and put back on no problem. This morning I emptied and replaced cup and it started to over flow in less than five minutes. I've check air hose...it's not cogged...please help.

 

[teetee]

Katfish50,
Are you by chance adding an additive that incresases the effeciency of your skimmer? Your situation reminds me of an identical incident that occured with my Berlin a couple of years back. I added a liquid product (can't remembere the name) that was to maxmimize skimming. what I had instead was an overfolwing collection cup (all water with little skim). Problem stopped whew I stopped using the product.