What is this algea?

[szogun]

Hi all I have recently got about 30lb of LR from a friend which was getting rid of his old tank the LR was fully cured she had it for over 5 years although, it was all covered in brown slime as well as green algae.
Before putting it in my tank I have scraped it all of. Now I'm getting little air bubbles on the rock right after the lights go of does that mean I will probably get the algae bloom?

One more thing I have a yellow gorgonian and I noticed a kind of white film on it and now I noticed tiny little bubbles on it what kind of algae is it? Is there a white one?

[karlas]

it sounds like you might have cyano bacteria (slime alge). you can get rid of it but it will come back the next day its a real pain to get rid of. there are some checmimals that will get rid of that. or you can do it the hard way like i did.

things that affect cyano would be
1. hi nitrates - over feeding, over stocking

2. old lighting- over time lights change spectrum and a lower spectrum will actually feed alge

3. low water flow - make sure you have proper water flow cyano loves low circulated alges or places where xcess food or detruis will collect


4 hi phophates or sillicatates

one thing that helped was i kept cleaning it with a turkey baster, added powerheads, started doing smaller mroe frequent water changes and eventually it got rid of it