Cloverleaf Blanket Answer All Season is an award-winning treatment for clearing blanketweed and string algae from garden ponds. It's a 100% natural blend of minerals and enzymes that works where many bacteria-based treatments fail, and it's completely safe for pond fish, plants, and biological filtration systems.
Simply mix the required dose with pond water in a watering can and pour evenly over the surface. The pond will take on a milky appearance to begin with, clearing again within about 5 days as the treatment works through.
Blanket Answer can be used at any water temperature, though it's most effective above 10°C, and UV units and protein skimmers can stay running throughout treatment. A single dose is usually enough, with a monthly top-up if needed; leave at least 10 days before adding any other pond chemicals or treatments.
This 500g tub treats ponds up to 6,250 litres (1,375 gallons), based on a dosage of 10g per 125 litres (28 gallons).