Was wondering if anyone knew if the pictures I posted are the start of coraline algae or nuisance algae. The tank has been cycled for about 3 months. With LS and LR. Had a diatom bloom that went away about a month ago and now my rock is turning green with some purplish pink spots. I tried wiping it off but it doesn’t come off. It seems hard. Water parameters are. (Ammonia 0, nitrite 0, nitrate 5ppm, phosphate 0. Salinity 1.025. Temp 76.5.
