[Florida Reefer]

I had an interesting thing happen on my second dose this weekend that I'm wondering if anyone else has noticed. Going into the 3rd hour something came up and I had to leave for some time. By the time I got home it was like hour 10 and I didn't have time to do the water change and add carbon so I just turned the skimmer back on; I hate it when work gets in the way of my hobby. The next morning when I did the water change I noticed that there was an oil slick on top of the water and my hand/arm was oily after putting it into the water. Since doing the water change and adding carbon it has gone away. Everything looks fine I just wasn't expecting the oil slick. I know there are others out there that weren't able to do the water change and carbon immediately and was wondering if you saw the same thing.