Vod Posted January 13 Share Posted January 13 Hello, I have been feeding my plecos Hikari wafers, and while looking over the ingredients, it says copper sulfate. I have a bunch of shrimp in the tank and copper is toxic to invertebrates, but so far it doesn't seem to affect the shrimp as far as I can tell. Anyone have any long term use of this food with shrimp in the tank? Link to comment Share on other sites More sharing options...
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