I've been peroxide dipping zoas/palys for a few years now. I use 10% peroxide to water and dip 15 minutes. Kills all algae, zoa eating nudies as well as their eggs(my main reason for dipping), flatworms, and other nasties. It also stops zoa fungus(my other reason). Killing algae was just a bonus.
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72 gal bowfromt mixed reef sps dominated, 25 gal mineral mud type sump/refugium Skimmerless
2x250 14000k phoenix hqi 2x96 pc actinic, 50x flow
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