Pond Boss Forums AQUATIC VEGETATION Controlling unwanted plants Does this sound right?

Welcome to the forum!

What part of Wisconsin? I have relatives in Vilas County and went to college in Stevens Point.

Those calculations seem to be correct.

Don't use that stuff, it's too expensive. That is for a small koi pond. If it is algae, you want to treat 1/4 to 1/2 the pond at a time and it all depends on where the algae is growing. If it IS filamentous algae and it's on the surface or in water less than 2' deep use Cutrine Plus Liquid. If it is in water deeper than 2 feet deep use Cutrine Plus granules. If there are Koi or Trout in the pond use a product that does not have chelated copper or any type of copper in it like Green Clean Plus or Phycomycin.

You don't want to treat the whole pond at once because if all the algae dies at once, it could cause an O2 crash and then you could possibly kill any fish that are in there.