use filter sock to catch all the crap, then change out 1-2 days
Dinoflagellates are actually one of the easiest nuisance algae to treat. You will need to raise the pH up to 8.6 - 8.7. This will absolutely kill the dinos and is not harmful to the fish or coral. Of course this could kill fish and coral too if you don't do it slowly. I usually recommend increasing the pH 0.1 every day or two with kalkwasser.
I have treated dozens of tanks this way and it has always been 100% effective. The only problem is the elevated pH usually needs to be maintained for at least 3-6 months. Even after that long the dinos could come back as soon as the pH drops back to normal levels.
If you have a Neptune Apex is is very easy to have the Apex dose the kalk.
Sorry I missed you today, Jesse told me you stopped by and were having this problem. I'll be in the store Sunday off and on if you want to discuss this more, or you can email me.
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