Tetra Pleco Spirulina Algae Wafers Tetra Pleco Spirulina Algae Wafers – Complete food for herbivorous bottom-feeding fish. The supreme quality of Tetra Pleco Spirulina Wafers ensures optimal nutrition for your fish. With algae protein to then meet the specific nutritional needs of algae-grazing fish. Rich in essential fibres for easy digestions. Due to the solid consistency, the wafers do not cloud the water. 100% vegetable premium food.