TetraPro Energy is formulated for fishkeepers who want to feed the very best diet possible, TetraPro Crisps is a premium daily food for all tropical fish. Energy Crisps contain a concentrated source of essential fatty acids and proteins, for strong muscles and excellent condition Produced using Tetra’s patented Crisp Technology, for less waste and clearer, cleaner water. Improved digestibility delivers better nutrition compared to flakes. Low heat process preserves more essential nutrients compared to flakes. Nitrogen and phosphorus production is reduced, helping to control algae. Solid waste production is reduced, making the aquarium easier to maintain.