I don't like it. I prefer a natural phyto bloom along with the damn weeds.
FWIW As usual, I agree with you Dave. I am resisting dropping any chemical in my puddle. Someday I may be forced too but, until that day, let nature take her course. Can always drop some craws or GC if veggies get out of hand. Heck, the veggies do all kinds of good things.
I also understand, if you have a heavily managed pond targeting a specific fish species, the chems are a great tool for ya so, to each his own.