tank has had live rock in now about a month, blasted through my diatom bloom, now im seeing this algae growth on the rocks, mostly on the higher elevations closer to the light, it has a somewhat slick feel to it when I rub it with my finger, I was kinda thinking this might be coraline growth but im not sure, its green mixed with a little white, base rocks are starting to get little bits of purple on them also in places but this is much more widespread and the snails and crabs dont seem all that interested in it.