coralline correlation?

[Gary Majchrzak]

In order to make room for growing corals I had to move some rock to sump.
Now, in addition to the purple corallines growing down there, I once again have green corallines growing down there.
Obviously a connection... but I don't understand why.

 

[Willistein]

The greens were on the rock you moved, or you just noticed them in the sump?

 

[mr.maroonsalty]

I've never exactly decided if the greens are actual reef building algae, or simply tough.

 

[Gary Majchrzak]

corallines come in all shades.
These are green corallines on the sump glass. Greens often appear before purple IME

 

[becon776]

I like the chestnut colored stuff. Kind of a reddish brown

 

[reepher315]

I also noticed a green hue appear one my dry rock before the purple came in. Thought it was nuisance algae at first. Recently seeing more bright pink. love the look of that stuff.

 

[tmz]

Don't know . I get different colors in response to different lighting. Pinks bright; purples not so much.

 

[erndog1001]

That's part of the beauty of this hobby. Sometimes just moving things around creates a whole new set of environmental circumstances that some new form of life will take advantage of. And its totally cool when it happens!! Well most of the time... Hahaha

 

[tmz]

Yes, it's fun when that happens.
few days ago while cleaning up some detritus in one of the tanks I picked up a small frag of zoanthus glued to the bottom with sponge growth . As I tugged on it a black fleshy tube appeared to be hanging on tho the bottom and then released. When I looked at the bottom of the rock, a black slug with bright blue markings was nestled in a crevice, Not sure what it was but may be a Chelidronura varians a known flatworm predatorr.. I carefully put the rock back. It's been a very long time since I saw a flatworm in that tank ,btw.