Coraline?

[Hara]

I am familiar with cyano, this is not cyano as it is encrusting the rock.

It is a beautiful midnight purple color. almost velvety looking. It is spreading rather rapidly, would this be a different type of coraline?

 

[reefrunner69]

No, I'm unsure what type it is, but coralline is calcerous and doesn't look velvety. It is also difficult to scrape off the rocks. I had some identical to the way you descripe and it came off fairly easily with a toothbrush and a little elbow grease. Still don't know what it is, but it wasn't coralline.

 

[fishfreek]

When it grows how does it grow?

Coraline usually starts as a speck on the glass (thats where you notice it growing easiets) and then it grows out from there getting larger and larger diamater.

 

[Hara]

Coraline usually starts as a speck on the glass (thats where you notice it growing easiets) and then it grows out from there getting larger and larger diamater.

Mine has never had a chance to land on the glass as I scrape every day. It starts as a speck on the rock and then grows out. It is encrusted. A few places have like pinholes in them.

 

[ReefLady]

Hara - there is a type of coralline which is a very dark red (Maroon Coralline) - the species is Peyssonnelia sp. We have some in our tank, and although it is very hard (like normal coralline), it does have a velvet-like appearance.

Here's some info. on it from John Rice's gallery - is this it?

Maroon Coralline (Peyssonnelia sp.)

HTH,

 

[michealprater]

I got some of that in my 20 gallon. So is it ok?

 

[ReefLady]

I got some of that in my 20 gallon. So is it ok?

Yep! Just another type of coralline. Nothing harmful at all.

 

[michealprater]

seems to grow well in very low light.

 

[reefrunner69]

I have some of that...but it wasn't what I was referring to...the stuff I was talking about looks like a deep wine colored velvet, like a really thick turf algae.

Here is a pic of my maroon coralline..
http://www.reefrunner.netfirms.com/images/nano/peppermint.jpg

 

[troutman11111]

a photo is the best, but you decribed it ok to me. it is a type of cynao bact. i can't remember the name that my lfs told me. poss high phos/silica. you can pick it up if it gets thick enough. my recemendation is to turn up your skimming to the max and check your posh/silica level. i got rid of mine in 1 week. in just 2 days it should start getting brown. 8)

 

[reefrunner69]

If it is cyano...it is a new one on me. This is fuzzy, and I don't mean stringy, like it is holding air bubbles or is imply stringing out, it is fuzzy. it looks like the fuz you might see on a wine stained teddy bear :?

 

[Hara]

Reeflady,
It does look very much like that, the only difference is that it would be more an exact purple, like a seeded grape or the color purple (true purple)in a box of crayons

 

[troutman11111]

it looks like the same stuff i had. does it have a leather feel on top. the insides should be soft.

 

[reefrunner69]

I don't know...I'd have to ask the tooth brsh I scrubbed it off with. I wasn't letting it stay, it was growing in the middle of some GSP.

 

[Hara]

here is a picture of the stuff....also, the tiny pink specs, they are popping up all over, but they are not flat, they are little mounds.

 

[michealprater]

Looks like coralline to me .

 

[Anemoneman]

Pink looks like coraline. Purple looks like an encrusting sponge.

 

[ReefLady]

The top picture looks like forminiferans - they are small one-celled animals that feed on extremely small particulate matter (protozoans, etc.). Pretty & harmless. Here's a close up shot of some red ones: Foraminiferan (Homotrema rubrum) ~ John Rice's web page

The second picture definitely looks like an encrusting sponge. Cool color!