Comments invited: Why do some really good skimmers have seemingly random overflow?

[Randy Holmes-Farley Verified Community Expert]

I have a Bubble King that has been dialed in for months. I have a very stable tank and didnt do anything differently for many months; the skimmer was perfect during that time. In the past week I started dosing Tropic Marin Elimi NP (very small doses - 1ml in my 165g setup every other day for 3 days). A few days after my 3rd dose, my skimmer went nuts. I have to believe it was the Elimi NP? its the only variable I changed in months. Would that make sense @Randy Holmes-Farley ?

Could be coincidence, or a cause and effect.

While I do not know what exactly is in Elimi NP other than organic carbon, it is not totally surprising that it might impact skimming. Since it happened days later, it could be from excretions from the bacteria that are growing as a consequence of dosing it.