Hi Alex, you can remove all these hair algae very easily with a tweezer, don't worry about poking the zoa, they will be fine. Then apply Full strength of sterling the 3% hydrogen peroxide with a pipe it soaking the Frak Brock for two minute outside then rinsed and put back in tank. For the next couple days use the turkey baster and blast off the dying algae where you previously applied the hydrogen peroxide in between the crevices of the zoas. You will notice the fact rock will be very clean in a couple days
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