Pond Boss Forums AQUATIC VEGETATION Controlling unwanted plants Aphanizomenon - aka Grass Blade Bloom

Yes. I've used Phoslock, liquid buffered alum and alum/hydrated lime to remove nutrients in a pond. Performed water tests pre/post to see the levels of nutrients removed. Phoslock was applied at the rate of 220# per ac/ft of water. Liquid buffered alum was applied at the rate of 55 gallons per acre foot and alum/hydrated lime was applied at the rate of 300#alum/150# Hydrated lime/ac ft of water.

Phoslock amount was determined by SePro after seeing amount of nutrients in the water sample.

Both buffered alum and alum/hydrated lime worked better at dropping levels of Soluble Reactive Phosphorous and Total Phosphorous levels than the Phoslock.