Hello everybody!

[Baseman422]

Hey, I'm new to R2R and pretty new to the hobby.

I have something red covering my rock and crab shells. Looke like velvet. I'm going to try and post a pic. Does anyone know what it might be?

Thanks guys!

 

[revsgirl]

Hi there!! Welcome to R2R!! Hopefully some of these guys and gals around here will be able to help you out!

 

[Loki]

It's cyano. I had/have it in my tank. Some things that cause it are old bulbs, feeding to much, poor water quality. I had it all over my display and I upgraded the light in my sump. It has been slowly disappearing and it's at a level that I can live with.

Things to try to get rid of it. Lights out for 3 days, new light bulbs, increase water changes.

 

[revhtree]

Welcome to R2R!

Sounds like you have cyanobacteria. There are many Threads on R2R about cyano. Have a read through this thread. https://www.reef2reef.com/forums/ne...um/24275-cyanobacteria-questions-answers.html

 

[BarbH]

Hello and welcome to r2r :welcome: Make sure to check out the contests and giveaways that are taking place right now.

Sent from my SCH-R720 using Tapatalk 2

 

[RDHDDRAGON]

I have never seen cyano growing on crabs. If you can post a picture it would help.

If you touch it, can you wipe it off? If it comes off easily it is cyano, if it doesn't it may be red coraline. I have some that is a red/burgundy color, almost same color as cyano but it isn't. Actually grows across the rock like the purple coraline.

 

[Baseman422]

Thanks everybody!

It does not wipe off with my finger I can scrap it off with my scraper. It almost scrapes off like wax if that makes any sense. I will try to put up pics when I get on the comp.

 

[RDHDDRAGON]

That sounds like red coraline algae, not cyano. I have one tank that has as much of that as the purple coraline. Here is what it looks like on the rocks: