Many ponds have problems with green murky water as well as the dreaded blanket weed. Oase AquaActiv AlGo Universal is an effective treatment to reduce slime, suspended and string algae, as well as restore and support the natural balance and quality of your pond water. It works by inhibiting the photosynthesis of the algae, reducing new algae formation and causing it to die. Each neat 500ml container contains sufficient treatment for ponds up to 10,000 litres and is harmless to plants and animals when used properly.
 
Use biocides carefully. Always read the label and product information before use!