I have been fighting dinos/diatoms/cyan for so many months I have lost track. I know what cyano looks like and feel it’s pretty easy to get rid of. I originally thought the brown stuff was diatoms but it’s started developing air bubbles so I think I have both. I’ve read the pertinent threads and done lots of research. Can’t figure out the best course of action. Stuff goes away after lights off and comes back during the day so I tried lights out for 4 days. It went away but a few days later it came back. I hate to try again because my anemones were very unhappy the first time. I’ve done water changes.
Stuff I have: InTank media rack with floss pad, carbon and live rock rubble. Tunze nano skimmer. Two opposing power heads. Steve’s LED upgrade lighting.
Tested yesterday....
pH 7.5
Calcium 389
dkh 8.5
Mag 1240
Salinity 1.026
Nitrate abt 4.00
Phosphate about .14
pH is low. I have the same issue in my 60. CO2 reactor was the only thing that worked.
Used BRS calculator to dose BRS part 1, 2, and mag
Used NO3-PO4
Haven’t retested today...
Question.... of course, how do I get rid of this junk? I’ve thought abt hooking up a small UV sterilizer and stirring everything up after lights out. Will that help? I can’t really tear the tank down and start over.
Sorry my pictures are so bad...


