The Cutrine+ will knock any planktonic or algal bloom down, as it breaks down, the Phos and Nitrogen will be released allowing the Phos to be locked up by the Alum.
60lbs/ac ft is good for "some" Phos being locked up with a small amount of colloidal clay but I think that's about 100lbs per ac ft short in my experience. I've used this method several times now and I've found 125-150lbs per ac ft is best in most cases, I've used as much as 200lbs per ac ft with no problems..
Have some hydrated lime on hand in case you get a large pH drop,. It adds calcium, has the power to add more negatively charged ions to lock up even more elements and sink it. You don't have to mix the hydrated lime in a slurry either
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