blueberlin
2010 Research Grant Donor
I have been using this reptile cave in my tank. It is sort of supposed to look like a rock - I've seen others here using one, too, maybe y'all know what I mean? Anyway, I took it out today for a scrub and found these black spots on the underside. They look like mildew you can get on grout in the bathroom. They weren't there when I first bought the cave. Pic below - any ideas?
Thanks,
-Eva
Thanks,
-Eva