250 g sachet of Blanket Weed Treatment. Use FOUR PER ACRE every 6 weeks 250g sachet of Beneficial bacteria treatment for garden ponds up to 1000 m2, larger pack sizes available, please message for discounts. Controls duckweed at double the dose early in the season. Repeat dose every 6 to 8 weeks. Completely natural nutrient reduction technique, no chemicals, fish friendly, works on blanket weed, but will also control duckweed before the end of May. Soluble sachet, no need to open, just throw it in and watch it dissolve Will ONLY control Duckweed if treated before the end of May.
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