Clear water is not for clearing algae, clear water is a flocculent that attracts water borne particles together and causes them to sink to the bottom of your pond, leaving the water crystal clear. Use a air pump or air stones in the water if it isn't already agitated.
If you are running a filter it will pickup the particles in the water after you have used this product. because they are now bigger they will stay in the filter, at Windsor Fish Hatchery we clean the filter 48hrs after using this product.
Dose 5ml per 400ltrs for extremely cloudy use 10ml per 400lrs