Herbivorous plecos need food containing 10 % wood for digestion, the exact amount these wafers contain. As these novel wafers do not dissolve in water, they do not pollute the water, thereby giving shy fish the opportunity to feed in peace later. The sinking wafers contain energy-providing wheat germ in addition to spirulina and vegetable matter. Better food, clearer water. Dermatologically tested to reduce the risk of allergies to our customers.