Mineral boost for your pondA boost for your pond! The boost is 100% natural. It is rich in minerals and calcium carbonate and is indispensable to your pond. Is there anything the pond booster can't do? It ensures that there is a high level of activity in your pond. It neutralises acidification, restores the pH value of the bottom, reduces sludge formation and restores the flora and fauna, as well as clarifying the water. Safe for humans and animals. Use the boost twice a year.