@ScottB I didn't follow advice, but, hoping this isn't too bad. After a month of battling cyano, I decided to use chemiclean. Before using it I verified I was up against cyano. Well, the chemiclean worked. Sandbed is clean, etc. I noticed some brown goop growing. I was able to get it under scope today and its dinos. Now, it's not all over the tank, just in small spots and I know dino is always present. I'm running a 90w uv on my 275(vol) setup, wondering if I should do anything else? I noticed the dino is starting to cover some corals, but not horribly bad. It's mostly covering some gha on the back wall and very little on the rocks. When I scoped it, it looks like osteo, but it's not moving. Pics and vid below.
Tested params today
35ppt/78*
15ppm no3
0.19 po4 (was 0.08 pre chemiclean)
460ca
1500mg
8.0 dkh
Wow. I have never seen such lifeless ostreopsis like that before. They look kinda crispy as if they are fresh out of the UV sleeve.
@taricha have you ever seen this before?
It is almost a given that you will get a dino bloom after Chemiclean. Otherwise, I think you are running a not-so-hospitable environment for them, so they will likely calm down.