Tiny little black things in tank...
I've just noticed over the past day or two that I now have a lot of little black things over the bottom of my tank, they don't appear to be alive...they're look like little bits of dirt really, sort of long and thin, but only tiny.
They weren't there before the last week when I've added some corals.
A couple are on one or two of the corals themselves, but most are on the sand, or the bottom of the rock.
Does anyone know what they could be?!