The Clipper comes in a granular form. I used a hand pump sprayer regular garden type. I put the clipper in about half a pound and added the surfactant ( sold seperatly...it keeps the sprayed mixture on the plant and on the surface its cheap about 15 bucks) added water slowly put the lid on and let it sit for about 5min so it soaks in then I shook the sprayer to mix. If I remember correctly I went through 2 lbs last year. I only did .5 lb at a time last year because of what I read about losing oxygen. I just kept an eye on it to see if it was helping and if I need to reapply. I'm no expert but I would go by pond acreage not depth. I have a one acre pond. This plant lives on the surface and this treatment is on the surface.