Anyone Know What these Are - Canreef Aquatics Bulletin Board

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Anyone Know What these Are

04-22-2007, 09:53 PM

Ruth

Member

Join Date: Jul 2005

Location: Fort St. John, British Columbia

Posts: 1,605

Hydroids are bad if you have any type of coral. They multiply and spread very quickly and will sting and kill coral. If you have a fish only system they are not harmful.
They are very hardy and can be just about impossible to get rid of. I have even heard of people taking a blow torch to their rock trying to get rid of then (not recommended).

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