Colour of Coraline Algae?

[orieng]

My two year old RSM 250 has lots of purple coralline growing in the rocks. But I can't seem to be growing Orange or Red Coralline. What can be the reasons for that and what colour of coralline do you all have?

 

[Nob35]

Not 100% sure but I think the color depends somewhat on the trace elements in the tank. So dosing different things will give you different colors.

 

[whippetguy]

I have pink, red, and purple in my RSM 250, but I have red and green in nano. I don't dose any additives.



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