Leave them alone, they will go away... or not. Hydroids are like algae, if you put something into the system that occupies their 'niche' or outcompetes them, they will recede and maybe even disappear. And as was said above, as reef tanks mature they seem to go through a bunch of stages where you are guaranteed to deal with algae, cyano, and a host of other nasty stuff... maybe this is something to be expected in our little tanks filled with incomplete ecosystems?
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Calvin
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Planning a 29 gallon mixed reef...
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01-27-2009, 07:15 PM
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