Now that you mention the Nautique, that is something else he and I have spoken of. It has been two years since the last treatment so I can't honestly remember what combination of chemicals he used. The pond in question is extremely clear so there is light transmission to the bottom over just about the entire area. I've asked him about the water colorants to decrease the light transmission but he did not speak favorably about them.

About the only other solution I know of would be to treat the pond using biological control. That is, overstock with Grass Carp and then remove as necessary once they have done what they are intended to do. Granted, this isn't to say that once they Grass Carp are removed that there won't be another re-growth of plants but I'm kind of running out of options.

As for the applicator, he's probably the most wide used in the Terre Haute area.