Help! Cyano outbreak, dinos, or both?

[Tbg299]

I've had a big bacteria bloom in my tank this week. Most of the cyano I have been blowing off my sandbed and rocks, but it just regrows overnight. Today i noticed little bubbles developing. Are these dinoflagellates? If so, how can I protect my corals from them? I have 3 chalices, 2 monti caps, 2 stylophora and 2 birdsnest.

Parameters:
pH: 8.1-8.2
dKH: 9.9
Ca: 506
Mg: 1500
NH3: 0
NO2: 0
NO3: 10 ppm
PO4: 0.18 ppm

 

[Duncan62]

Thanks, I'll take a look at it. How do I prevent the toxins from killing my corals? Should I run some activated carbon?

No carbon.