I have 1 little zoa frag and a medium colony that have hair algae growing through the polyps and irritating them to where they don't open all the way. Found something from humblefish saying that a dip from 210-350ml in 1/4GAL of tank water followed by a quick rinse in tank water (not in the tank) is safe to do.
If this is safe, should I ensure the zoas have closed all the way before dipping?
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If this is safe, should I ensure the zoas have closed all the way before dipping?