Natural organic method of pond algae control (blanketweed).
Safe for use with fish and wildlife
Fitted with cork float to keep afloat
Pack contains 2 mini bales - each treats 4500 litres(1000 gallons) for 6 months - approximately a 6ftx8ftx3ft pond

Place barleystraw bale in the pond in February - one month in advance of warm March days. Add replacement bale in June so that is activated before the earlier one is due for removal. 2nd bale due out in November - no barleystraw required December and January due to the cold.