This product binds the phosphates and drops to the bottom of the pond. This means it will need hovering off the pond base a few days later. This will instantly drop the level of phosphates. How much treatment is dependent on the level of phosphates in the water.
We recommend removing as much blanket weed before treatment, as dead blanket weed dies then turns back to phosphates! A repeat treatment can be done after a week. Dosage 100,000 litres 200ml treatment required per week (25 weeks worth), weeks needed depends on current level of phosphate level.
This is great product to get the entail level down.
It’s also the most cost-effective solution.