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.
To use, mix the required dose with pond water in a watering can and pour evenly over the pond's surface. The water will turn slightly milky at first, clearing again within about 5 days as the treatment gets to work.
It can be used at any water temperature, though it works best above 10°C, and there's no need to switch off UV units or protein skimmers while treating. Most ponds only need a single dose, with a monthly top-up if further treatment is needed. Wait at least 10 days before adding any other pond chemicals or treatments.
This 200g tub treats ponds up to 2,500 litres (550 gallons), based on a dosage of 10g per 125 litres (28 gallons).