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Hi guys.
I have just noticed my rock is growing some pink spiky looking stuff. Just wondering if anyone knows what it is? Its only small at the moment but you can kind of see it in the photo i have attatched
Thanks.
The light purple/pinkish areas look like coralline algae to me, and the reddish areas look like cyanobacteria. Coralline algae can grow in a "spiky" or encrusting form, although most people don't have that variety/species in their tanks.
Mine tends ti be a mix of dark, light pink and purple. Ive also got little bits of white stuff simular to the pink stuff in the photo i posted earlier but its very small.
Its just underneath it.