Do i have a problem?

[wkscott]

Ya use RO water, the Red Sea slime remover worked for me very well. Also clean those rocks ,and siphon the red slime off of the sand. That is definitely red slime, (Cyanobacteria) here is a link of how I got rid of it.

How are you sure that "this is definitely (Cyanobacteria).?"

 

[ReefTalk]

Should i be running a UV sterilizer?

Yes it dose help

 

[lambchops]

Hopefully you have cyano and you can simply use a commercial cyano remover. Thankfully I've never had spirulina so I don't know how to treat it. I just know that it involves using hydrogen peroxide and it can be very labor intensive to remove it.

I believe you have that opposite. Cyanobacteria is treated with hydrogen peroxide, spirulina is not effected but it. You most likely had spirulina.

 

[ReefTalk]

How are you sure that "this is definitely (Cyanobacteria).?"

Looks exactly what I had before