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What does PSF stand for?

PSF stands for PURE Spirulina Flakes


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The new larger flake size can be easily crumbled into smaller pieces for small fish or left large for full size ones. The unique “ALL SPIRULINA” nature of this food also gives it the distinction of being the only Spirulina flake product that you can actually overfeed to your fish without worry of complications typical of overfeeding with conventional fish foods. Excess food does not ‘rot’ or ferment in the tank within a short period of time like other foods with cereals or fish meal in them do. Our PURE SPIRULINA FLAKE.