Its good to be scared and cautious. You have to decide if it is worth the risk or are you willing to live with what you have.

In my case it was a no brainer it was either treat or rip apart.

Treated in a system with tens of thousands of dollars worth of nice corals and anthias, no losses. Would do again in a heartbeat.

Thanks Albert, that does make me feel a bit safer...

In my case because of the age of the system (15 years old) and the nutrients that were built up in the rock, deep sand bed and the heavy volume of algae once I got the Bryopsis under control I had a bad Cyno outbreak, Once I got the Cyno under control I had a bad Dino outbreak. To get the Dino under control I had to encourage the hair algae to grow. Of the 3 things the hair algae is the easiest. This transition took over 6 months to happen. Water changes didn't stop the transition and likely encouraged the Dino outbreak

In the end to fix the root of the problem I have to tear down the tank and start again. It is in the plans anyway.

1 week in. Starting to see gha die off. Its browning and some areas that were not bad are clear now. No effect on coral or clams at all but happy to report none of my fish currently have yeast infections!

Nitrates have gone from 4 to 15 this week, turned skimmer back on...

I am glad all your fishes are fine...hahahaha

Small update - First negative. The fluconazol did kill a nice sponge I had. Those who have been to J&L have seen the cube take before you enter the fish/coral area that has a lot of that deep purple plating sponge, well I bought a frag of it about a year ago and I'm guessing the sponge obsorbed the fluc and died.

Not a huge deal but Id remove sponges in the future if I ever get another...

Ok, so in conclusion...

The fluconazole did not kill my GHA really at all. I went the full 14 days without a water change and the first 6 without any skimming. I'd read some post that it does kill GHA, some that it doesn't. It certainly did not kill it in my tank at all and I'm guessing the total lack of filtration made it grow even more because when I came back from a 5 day trip it was pretty out of control.

So if you were to ask me if it kills green hair algae, I would have to say no. If you asked if it kill sponge, I'd have to say yes.

Thats what I learned from my $50 14 day run with Flucanazole.

interesting.
are you a outside of a month since treatment? gha takes a lot longer to kill off than bryopsis does. in fact, i was probably saying the exact same things as you on week 3 then BOOM it all completely dissolved completely.

So you went without filtration for a month? I only went 2 weeks before I did a water change. What did you do exactly?