Hi guys, I wanted to ask if anyone knows if this is coralline, cyano, or some kind of different algae. It does not come off when blasted with a turkey blaster or when trying to scrap it off. I have coralline growing in my other tank however it appears to be the traditional purple color and coming in in small patches. This one appears to be a red color and seems to have covered most of my rocks. If anyone can help that would be great.