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					Originally Posted by Myka  Yeah, Aquaforest does not recommend doing large water changes using the Probiotic salt.  I've done 30% water changes with it, and I didn't get any bacteria bloom or anything.  I'm not sure I wold try bigger than that. 
The third component is chloride free mineral salt.    | 
	
 I've done a 50% water changes with the probiotic reef salt and no bacteria bloom.  I think you have less chance of a bacteria bloom with a mature system.