Yes only powdered spirulina. I've attached a pic of the one I specifically use. Nothing else. I've read that fish foods can pollute the water so I will only feed spirulina. I've seen others that sell spirulina but once I looked into the exact ingredients I saw that there was fish or bone meal & needed to find one that was pure. This is the one that Fuku Bonsai used.
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Last edited by Vorteil on 28 May 2017 00:22, edited 1 time in total.