It will kill the chaeto, this I know for a fact. The nudibranch, I can't say for certain. I would hazard to say yes and QT it as to not lose it.

I'm not sure about the slug. I think it should be okay, but we don't know the toxic dose of the chemical for that species.

Thanks -- I'll qt the slug and chaeto. :)

The slug eats many varieties of algae. Think the chaeto is one? If not, I may keep one piece of live rock with algae in the qt, too.

Threshold - my experience with marine algae fix was a disaster. As I researched it over the next week's after my tank crash, I discovered more than a few people with the same experience. Inshort....the algae killer works TOO well. It killed off the beneficial competition for nutrients at the microscopic level leaving my tank wide open to dinoflagellate over run. If you have a chance and do read back about two months. Look up the thread detailing other marine algaefix. Seriously, I have been a reefer since 1998 and never had a hint of dinos before my recent experience trying to rid my tank of HA and the results of Algaefix. Bad news and tons of work getting the dinosaur under control

I had a rare Cladophoropsis, not bryopsis, and the Cladophoropsis ate the algaefix as a preferred diet and really exploded. Meanwhile the algaefix killed all else at what ended up being a triple dose.

But I was fighting a losing battle vs that Cladophoropsis. Don't go triple dose unless your alternative is drain/bleach/restart. That's where I was at....

I am a bit of a fanatic when it comes to dosing etc. I use calibrated measuring curettes, syringes and such. A week of spot on following directions cost me 4 stonies and a couple of dozen inverts before all was said and done.

AlgaeFix Marine to control Hair Algae
 

I recently starting using Algaefix too. Today was my second dose with no noticeable results so far. But from what I've read it takes 2-3 weeks to show any signs of receding. I wish the instructions addressed the effects of using GFO/Carbon and/or skimmer during treatment. So many of the posts here have anecdotal evidence of the effectiveness with or without additional preventive measures.

Until I discover otherwise I'll kill my GFO/Carbon reactor and skimmer for 24-hours after treatment.

I know this is an old thread, but I'm dosing algeafix for GHA and am having trouble finding if I should take my activated carbon offline or not. Also, is it okay to leave the skimmer running during treatment? I've read many people don't have results for 3+ weeks, and I'd hate to leave my skimmer offline that long. There's nothing in the instructions that says anything about GAC or skimmer one way or the other. I want to give the algaefix the best chance to work.

Forget this stuff.

Fluconazole is by far more preferred and more effective.

I actually recently saw a long thread on that that seems like its effective with no side effects. Seems a bit pricy though. I had already ordered algeafix before I saw the thread on fluconazole so I figure I'll try the algeafix for a while first, and if that doesn't work well enough, I'll try the fluconazole. budget is tight with a baby on the way, so I have to watch my hobby spending closely for a while.

Algaefix works fort regular hair algae. Flucanazole is more pest ones like bryopsis.


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Thanks, I've been using it and it seems to be working pretty well for me. I still have some GHA, but it is more easily manageable as it's easier to scrub off the rock, and much slower growing. I've read really good things about Flucanazole. If I have a tougher algea in the future I'll probably give it a try. Algeafix still remains pretty effective IMO though, at least for the algea I have.

Yes, take your GAC offline. It will only remove the AlgaeFix. You can run your skimmer though.

Just updating this thread to document that I successfully used this product to rid my tank of a budding Dictyota population--a blue morph and a brown morph. I did NOT remove carbon, skimmer, or GFO during the treatment. Should state that GFO was started at the same time I started treatment as I took my ARID offline.

Took four weeks to completely eradicate and seemed to start working immediately. Don't think it really killed the algae, but weakened/destroyed the holdfasts. The day after the first treatment I noticed pieces of Dictyota floating around the tank and going into the sump. Pieces were then caught by the filter pad I have before the return chamber (don't use the stock reefer filter socks, instead cut a piece of filter pad that I lay on the bubble trap and replace weekly).

Not sure if the pieces broke off on their own or were the work of the blue tuxedo, who kept collecting more for his camouflage, or the sally lightfoot feeding. There were no adverse side effects in corals or inverts. However, every time I dosed, the urchin would release from the surface he was on. He would immediately right himself then go about his business.

Dosed 10ml every three days for four weeks. Total water volume of 100gal, give or take.

Yes, you can use Algaefix and UV Sterilizer together
 

I know this is a very old post. But, I just wanted to add some info for anyone who searches on this topic. Back then, Algaefix helped me remove all the Hair Algae from my tank. It really works if you use it correctly with caution. And I got to know from API Technical Service that you can use UV Sterilizer when dosing Algaefix. It will not denature the chemical. So, that’s useful info. Use Algaefix to fight what’s attached to rocks and glass, and use UV to fight what’s floating in water.

Just one caution though. When Hair Algae are gone, cyano or dinos might try to take over. That can happen since you took out one of the competition. Be ready to fight them off early or try to increase good bacteria population to avoid them from getting invited