Hey there, I'm still fairly new to saltwater. Can anyone tell me what this dark purple/violet at the top of my sand is? There has been very purple algae on decorative shells and on my live rock as well, and I understand it to be Coraline algae, but this seems a bit brighter and I'm not sure if it's the same.
![20230324_215213.jpg 20230324_215213.jpg](https://test.reef2reef.com/data/attachments/3007/3007973-889869add5a54460c164b89006af29c9.jpg)
![20230324_215213.jpg 20230324_215213.jpg](https://test.reef2reef.com/data/attachments/3007/3007973-889869add5a54460c164b89006af29c9.jpg)