Found these on a piece of new rock about 2 hours after i added it to the tank. i brushed the rock off in a bucket before adding it to the tank, and didn't notice any until this point. The next day I noticed these on other rocks, frag plugs, and my glass... what are they? they're tiny, orange, and although i've never seen them move noticeably, they are migrating around the tank at some point...
