I had some off brand multivitamin tablets that my Keyhole Cichlids loved. I gave them one a week. When I ran out, I couldn't find the same brand and the cichlids wouldn't eat them.
I don't think that they did anything to help my plants though.
Nope, but it tickled me that they really relished them. They gobbled them up. I would drop one on the left side and one on the right side. They would be eaten really quickly.
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