Reefkeeping South Africa » Marine Aquariums of South Africa » Is this green cyano?

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  Is this green cyano?

  Posted: January 17th, 2012, 11:40am CST by danimal

  
  
  
  
  slimy to the touch, goes away at night, comes back in the day.
  
  all parameters normal.
  
  how do i get rid of it??? tried upping my alk, didn't do much.