Okay, so there is this scaly crud on my aquarium hood at the leading edge where you open it and on the edges....what is it? It's a 10 gallon, sand substrate, coldwater goldfish tank with near-perfect water params. (Haven't tested this week yet, so I don't have exact figs for you)....This has been showing up off and on for about a month, and I keep wiping it off, and it keeps coming back. The first time I got it I thought it was some food that had missed the lip of the tank, but upon inspection, it's not. It is almost like a mineral deposit (but I have city water with no discernable mineral problems...it never happened to my other tanks....)
I'm not too worried or anything, just curious....(or should I worry?)
I'm not too worried or anything, just curious....(or should I worry?)