Tetra Pro Energy Multi-Crisps Tetra Pro Energy Multi-Crisps – An advanced daily diet for all tropical fish. These energy crisps contain a concentrated source of essential fatty acids and proteins encouraging strong muscles and excellent conditions. Tetra’s patented Crisp Technology means less waste and therefore cleaner clearer water. Solid waste production is reduced making the aquarium easier to maintain. Nitrogen and phosphorus production are also reduced helping to control algae. The low heat process preserves more essential nutrients compared to flakes. Feed several times a day but in small portions.