Crystal-clear water by reducing the algae growth – biological algae blocker for the pond Easy to use: determine the required quantity, mix it with pond water in a watering can, pour it evenly over the pond Sunglasses effect: the reduction of light irradiation has a preventive effect against algae Active iodine and vital substances to promote the health of the fish, no decrease of the pH level or the hardness in the pond Contents: biological algae blocker, AlgoPond Sorb. Dosage: 40 ml per about 700 - 800 l pond water