Fuzzy algae and tube worms

Brandon42 · Mar 30, 2016

So I was moving a couple things around the tank today and picked up a rock that is sorta bowl shaped.

I haven't really moved this rock in a couple weeks and it has very little flow/light going under it but it is right under the return line and next to a power head. When I picked it up and looked underneath I found this.

Iv also noticed a tube worm living on one of my snails shells. Are these a bad thing? And what is the fuzzy stuff?

Lionfish Lair · Mar 30, 2016

Tube worms are great.... unless they get too plentiful, but it's not something to worry about or mess with.

Brandon42 · Mar 30, 2016

Lionfish Lair said:
Tube worms are great.... unless they get too plentiful, but it's not something to worry about or mess with.

Any idea what the fuzzy stuff under the rock may be?

Lionfish Lair · Mar 30, 2016

I'm thinking your rock was once a coral, that died and was covered in coralline, but has since taken on a nasty algae. I would take that out and scrape some of that off with a toothbrush or something.

Brandon42 · Mar 30, 2016

Lionfish Lair said:
I'm thinking your rock was once a coral, that died and was covered in coralline, but has since taken on a nasty algae. I would take that out and scrape some of that off with a toothbrush or something.

I will try that, but most of the Coraline on this rock is fresh it was barely purple when I got it and has sense gotten a really bright purple to it.

twilliard · Mar 30, 2016

Looks like the beginnings of GHA

Lionfish Lair · Mar 30, 2016

Brandon42 said:
I will try that, but most of the Coraline on this rock is fresh it was barely purple when I got it and has sense gotten a really bright purple to it.

Sorry to say you won't see the purple for much longer if it's left alone. Sometimes it can die off, but......