SuncrestReef Posted July 27, 2019 Share Posted July 27, 2019 Last year I started seeing a lot of hydroids on my rocks, but after a few months they subsided. Now they have returned and are getting pretty thick on shaded areas of my rocks. Is there anything I can do to get rid of them other than scrubbing them off with a toothbrush? 1 Quote Link to comment Share on other sites More sharing options...
CrabbyCrabs Posted July 28, 2019 Share Posted July 28, 2019 Burn them with a laser? I've only read horror stories. Maybe they will subside again. 1 Quote Link to comment Share on other sites More sharing options...
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