Red Cyano Problem

[hurrifan]

I think it is cyano anyway. It is dark red and covers my sand bed. After a certain point air bubbles develop under it and it floats up. There are also visible air bubbles deep under my sand bed. I can see them trapped through the glass of my tank. My phosphates are undetectable, so are my other levels. Ph 8.1, salinity 1.026, temp is at 82. What can I do to get rid of this? PLease advise. Photoperiod is 10 hours a day with 3 400 W halides. Refugium is set up but things are not growing much because the lighting is only a 15w NO. Upgrading soon.

 

[chris_alvarez]

Try adding water movement in your tank. :twisted: :twisted: