newtoreef September 25, 2012 Share September 25, 2012 what kind of algae is that? is it a bad one? what should I do? help?? Link to comment Share on other sites More sharing options...
jimlin September 25, 2012 Share September 25, 2012 hydroids? Link to comment Share on other sites More sharing options...
Marc Weaver September 25, 2012 Share September 25, 2012 (edited) Yep, looks like colonial hydroids (google it and check the first few images.) Read up on killing them. Some say they are difficult to get rid of, some say they go away by themselves. If I were you and they are only one one small rock, I'd take it out and discard it to be safe. Some people even use a blowtorch to burn them off. I've never personally had to deal with them, though. Edited September 25, 2012 by Marc Weaver Link to comment Share on other sites More sharing options...
Coral Hind September 25, 2012 Share September 25, 2012 I agree with Marc, I would try to remove or kill them. If they are only on the one rock and it isn't really big then I would remove the rock and let it dry out to kill them. Then return the rock back to the tank to color up again. Link to comment Share on other sites More sharing options...
newtoreef September 25, 2012 Author Share September 25, 2012 great guys thank you so much. I will removed this rock and let it dry. Could I put on some kind of solution to accelerate the process?? Link to comment Share on other sites More sharing options...
Coral Hind September 25, 2012 Share September 25, 2012 If you want to use a solution you could use an oxidizer like a bleach and water mixture and soak it in that for a day. This will kill anything on/in the rock and also dissolve the organic matter. Give it a good rinse and return it to the tank. The bleach will break down by the next day into harmless water and salt. Placing it in the sun and open to air exchange will speed up the breakdown of the bleach. Link to comment Share on other sites More sharing options...
newtoreef September 25, 2012 Author Share September 25, 2012 will do . thanks Coral Hind! Link to comment Share on other sites More sharing options...
treesprite September 26, 2012 Share September 26, 2012 (edited) Polyp stage of jelly fish nausithoe. http://www.masa.asn.au/masawiki/index.php/Nausithoe Edited September 26, 2012 by treesprite Link to comment Share on other sites More sharing options...
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