4 slow release food cubes to feed the aquarium

JBL Weekend is the feed in slow-release cubes to solve the problem of feeding the fish during the weekend or absences of a few days, without the risk of polluting the water. 4 feed cubes with a duration of 3 days each. Each cube is sized to feed about 15 medium-sized fish. The block crumbles only when attacked by the fish to feed. The plaster content of the cube is completely safe for the inhabitants of the aquarium. It does not pollute the water.