I used a small amount of aquathol super K granular last year to control some pond weed I had. Worked great.

This year, I can only find the larger quantities of super K = $$$$

Does the liquid form work just as well? I have a sprayer. Aside from being in granular form, is there anything "super" about the Super K?

I considered using the Hydrothol, but I'm concerned about the potential risk to fish.

Pond is about 1/2 acre (10 feet deep). No moving water flowing in or out.

Thanks,
Bill