I think this is bryopsis. Am I correct?
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Yup! I couldn't see anything in the second picture so I just went off the first one.
Wait it out before you do anything and see if it starts spreading. I have some bryopsis in my refugium...but nowhere in the display tank. It has to compete for food just like everything else!
Bry, I'd try to scrape off and siphon what you can before it takes hold if you can, but there are options should it get out of hand.
I got what I could out shortly after taking this pic. Theres still a few spots left that I missed. I'll probably order some fluconazole tomorrow just to have it on hand in case
If I'm not mistaken, Bryopsis uses a root system. You can't possibly "pull" it all out.I'm usually not one for chasing w/ chems, but this stuff did work for me, and I had to too, started w/ kinda dirty rock and had a bad outbreak of bryopisis and HA, that stuff did the trick.