Natural rocks "The reef Rock" (20kg) - Size L Contains a mix of large size rock ranging from 26 cm (10 inch) to 32 cm (13 inch) size. Each rock weight 3 kg to 4,5 Kg. Collected in the Oceania tropical nature. 100% natural rock, 0% artificial rock. THE REEF ROCK® is a ready-to-use natural rock collected from a sustainable source causing a low environmental...