Zoo Med Laboratories AZMAFP4 Aquatrol Plankton Flake, 4-Ounce Zoo Med Laboratories Aquatrol Plankton Flake Zoo Meds Plankton fish food flakes combine ample quantities of Plankton and Krill which contain high levels of natural cartenoids This premium food provides your fresh or saltwater fish with more of the nutritional ingredients they desire. Zoo Med Laboratories Aquatrol Plankton Flake Zoo Meds Plankton fish food flakes combine ample quantities of Plankton and Krill which contain high levels of natural cartenoids This premium food provides your fresh or saltwater fish with more of the nutritional ingredients they desire This premium food provides your fresh or saltwater fish with more of the nutritional ingredients they desire