Jstiz,

Fwiw, the second year of my pond I had a little wpr, I left it that year. The third year I was afraid of it spreading so I treated it. 1/3 of the pond at a time over about 6 weeks. Everything looked great. Until the following year. FA began growing like crazy! I had none prior, but I had no other plants to take up excess nutrients. I wish I had done things differently. I may have treated some of it in strategic locations, but would not have gotten it all. I would rather deal with the primrose than the algae. I have planted some manageable shoreline plants and have some pond weed growing now and I believe that is helping use up some of the nutrients previously used by the primrose and the algae. You may have different results than I did, of course, because, say it with me, " it all depends".

Anyway, good luck and let us know what you decide and how it works for you.

CMM

CMM