I’ll try the cyano test almost forgot about that one thank you. I don’t think it’s Dino’s for a couple reasons but it could be a cluster of a couple things like you said. When I would try to baste it off the zoas the polyps actually disconnected from the substrate almost immediately. One is currently growing on a small PW as a result. I tried removing a zoa polyp but by day 2 in QT the brown dirty algea covered the polyp from ever opening again. So I thought maybe some form of zoa pox but recently it appears to break down into hair algea. At first the hairy algea you see crowding those Zoas used to just be a dirty brown film algea . It would keep the zoas from opening but after some time the zoas started to open and the aglea has grown into hair algea but still thin layers of the slime algea can be seen on the base of the zoas and it’s completely covered my gsp colonyIt would be an experiment with obvious risks (right??), but IMO worth a shot. It's not a lot of peroxide and the peroxide isn't really that strong if that helps.
I think I'd consider taking a sample and running some tests for dino's.....see if you can shake up a sample really well and knock all the brown off of one of the strands. Take the "clean" strand out. If you then leave it sitting in the light, the dino's ought to re-group into a little mass. Other things like cyano or diatoms won't do that. You can also add some peroxide to the vial (maybe use another tank sample that you don't shake up) and see if you get a lot of bubbling – that's a sign of cyanobacteria.
You might want to peek at this to see if your current conditions seem favorable to dinoflagellates: Dinoflagellates – Are You Tired Of Battling Altogether?
No but I do not
You're in favor of dino's? Or in favor of nutrients?
