cyano

[Reef_kid]

the easiest way to get ride of cyano is to lack the amount of nutrients in your tank... cyanobacteria is a nitrogen fixating bacteria.. And when the fermentation and decay of foods in the tank accumulate cyano thrives due to the increase of nitrogen and phosphate.
There is no way of eliminating cyano from the tank totally since its one of the most common and variable species of bacteria.
If it dose get out of hand treatment of erythromycin.
Doses do depend on the source that it comes from for instance Maracyn
Use as directed to treat a infection on the fish.
Since cyano is a bacteria not an alga erythromycin attaches the cell of the bacteria and kills it..
Although in this treatment new carbon and protein skimming is a must.
The reason it will kill hair alga is that it belongs to the family of Chlorophyta, which is a green alga that lives in a symbiotic relationship with cyano bacteria, and the treatment therefore kills the bacteria and the host cannot survive.

This treatment is generally safe for coral and invertebrates in small doses
Although it may put off the maturation period of the tank due to bacteria die off. Be sure to filter and skim as well as water changes.