Pond Boss Forums AQUATIC VEGETATION Controlling unwanted plants Hydrothol safe for fish if applied sparingly?

Using a weighted line on a boom sounds like a more complicated setup than just spreading from a motorized spreader. Is the K more cost effective than the Super K? Or why did you choose to do it that way? This stuff is pretty pricey so I want to make sure I buy the most appropriate option.

And it also looks like a surfactant is recommended. Can I use any non-ionic surfactant, or does it need to be one rated for aquatic use? I see that Alligare 90 is rated for aquatic use while others are not.