Yes you don't need much to sart with. I would go with 1/8 of a teaspoon to start and if all goes well you can up the dose to 1/4 of a teaspoon and more if your corals react well and if you don't have the white bacteria film building up.
 
Good luck with your zoanthids.  It's a pain to lose them.
 
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					Originally Posted by  Nano
					 
				 
				Thanks D. It's about 55g with the sump so maybe half or less then your dose would be good? 
			
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