purple algae In Saltwater Tank

[Europhyllia]

cyano happens! I don't have much but I think most of mine disappeared when I got new lights. Cyano likes a certain spectrum. Perhaps it's time to replace your bulbs?

Cyano can live when nutrients would be insufficient for other algae so the amount you feed may have not much to do with it (I don't think anybody could feed more than I do. If feeding caused it my tank would be covered in it ;) )

[Shawn]

I looked up cyanobacteria on http://en.wikipedia.org/wiki/Cyanobacteria

What they describe and picture is totally different.

I had what you are calling cyano. I have had it in differing degrees in all of my tanks (25, 45, 72, and 125) and it has gone away. The first one to get it was my 125. I freaked and got the Red Slime treatment. Didn't do any good. It went away in all of my tanks on its own.

My last tank to get it was the 45. It coverd everything in there for about 2 weeks then started going away. Now all tanks are clear of it.

I don't freak about it anymore.

[corruption]

They're calling it cyanobacteria because thats exacrtly what it is... the color shift can be anywhere from green to nearly black, and just about anything in between -- its also one of the oldest, most adaptable, and most invasive bacterial species in existence... your chances of ever completely being rid of it or avoiding it are pretty much next-to-nil -- the spores are quite literally everywhere.

Everyone's right on here -- the biggest enemies of cyano are a properly maintained environment -- good flowing currents, proper spectrum lights and clean water

-Corruption

[1fstlightning]

When I had that, it was I was told because I left my lights on to long, but it could also be the spectrum of the light lso causing it