Supply your aquarium fish with stored food for 3 days. Use: add food block to the aquarium. It sinks to the bottom. 1 block provides 10 - 15 ornamental fish up to 3 - 20 cm in size with food for 3 days. The block consists of a calcium compound that adds some general hardness to the water when dissolved. It dissolves slowly as the fish intake the food. Natural raw ingredients without artificial additives for a natural diet and healthy aquarium fish. Tested on JBL research expeditions in the tropics. Package contents: 4 feeding blocks. 1 block for feeding 10 - 15 ornamental fish up to 3 - 20 cm in size over 3 days.
