Mysterious growth


New Member
Hey guys so i’ve had a 30g salt water tank for about 3 years now, it’s its been going smoothly. But last year I noticed a weird little growth that seems like some sort of algae on one of my live rock. It’s so if whitish but didn’t seem to be spreading at all. But in the past week it looks like a few of the same littler growth have popped up.
Does anyone know what it is and if I should try to remove it.
Also thee is a smaller pinky spot that popped up under it this week as well, which I also have no idea what it is.