aotf Posted October 29, 2017 Report Share Posted October 29, 2017 Hi all, I picked up some Sera Spirulina Tabs for my shrimpos yesterday (saw a good deal, 27% spirulina, wanted to try them out) and checked the ingredients before putting any in the tank. Turns out there's a colorant called "sodium copper chlorophyllin" that I wanted some opinions on. My guess is that it's totally fine and that the copper is in very minute levels and/or in a form that is not bioavailable or of concern for shrimp, but I figured I would see if anyone has any experience with it before throwing it in my tanks. Thanks! Quote Link to comment Share on other sites More sharing options...
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