SuncrestReef Posted October 9, 2018 Share Posted October 9, 2018 (edited) When I first started to notice white fuzzy areas on some of my rocks, I thought it was a form of algae. But now I think it might be some sort of branching hydroids. Can anyone confirm? Below are some detailed macro shots. It only seems to grow in shaded areas on rocks, on a zoa colony, and around the base of my chalice. I've read that a peppermint shrimp might graze on hydroids. Any advice? Edited October 9, 2018 by SuncrestReef Quote Link to comment Share on other sites More sharing options...
IntoTheMystic Posted October 10, 2018 Share Posted October 10, 2018 Nice shots! Look like hydroids to me. In the temperate marine world, several nudibranchs mow down hydroids like grass. I wonder if Berghia would take a shine to these things? Crustaceans might enjoy munching 'em down, too. Dunno for sure but the Peppermint is probably worth a try as long as there isn't anyone in the system that might fancy eating a fancy shrimp. 1 Quote Link to comment Share on other sites More sharing options...
SuncrestReef Posted October 10, 2018 Author Share Posted October 10, 2018 9 minutes ago, IntoTheMystic said: Nice shots! Look like hydroids to me. In the temperate marine world, several nudibranchs mow down hydroids like grass. I wonder if Berghia would take a shine to these things? Crustaceans might enjoy munching 'em down, too. Dunno for sure but the Peppermint is probably worth a try as long as there isn't anyone in the system that might fancy eating a fancy shrimp. All of my fish are safe; 2 clowns, 2 blue chromis, a tailspot blenny, and a yellow watchman goby. I also have a kole tang still in quarantine, but it won't be any problem for a shrimp either. As for the photos, I shoot everything with my Nikon 200mm macro lens. I love the detail it provides! Quote Link to comment Share on other sites More sharing options...
jtarmitage Posted October 10, 2018 Share Posted October 10, 2018 Definitely hydroids. Manual removal and kalk paste is how I dealt with them in the past. They will spread quickly, so don't waste time dealing with them as they'll pester your corals Quote Link to comment Share on other sites More sharing options...
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