Algae?

[AJinNY]

Like everyone else I get green algae growing on my glass which I scrape away. Thats normal.

Lately I have notices blotches of purple appearing on my live rock. I assume its coraline algae which is a very good thing, no?

But I have also notices little bits of dark reddish blotches on my rock as well. Its not red slime though.

Is this red blotches algae of some sort? I dont think its a good thing. Any ideas of what it is and perhaps what could be wrong with the chemistry of the water to be cauing this?

Thanks.

[Curtswearing]

There are NUMEROUS species of coralline. Some of them are green, pink, and some are dark red. I don't have a pic but I'm guessing that this is a different strain.

[AJinNY]

Months ago I was getting some reddish slime on the rock and I put chemicals in the tank and it cleared up in a couple of days. This time its different....maybe it is algae. WHo knows....Ill get my water thoroughly tested and find out if somethings up.

[Curtswearing]

Let me clarify....coralline algae is a GOOD sign of balanced chemistry.

But I have also notices little bits of dark reddish blotches on my rock as well. Its not red slime though.

Not all algaes are bad. I think what you have is probably good.