I have had a sudden outbreak (within the last two days) of what looks like brown hair algae but I'm not sure that's what it is. I'm not ruling out cyano
but it doesn't look or behave like any of the cyano
that I've dealt with before. It's started to grow over a bunch of my corals and it's keeping them from opening.
The only thing I have changed recently is switching to a set of radions for my lights. The lights are on for 8 hours at 40% and I changed them out a couple of weeks ago.
Sent from my Galaxy S5 via the Aquarium Advice app.