Pond Boss Forums AQUATIC VEGETATION Controlling unwanted plants Tsunami DQ

There are 32 fluid ounces per quart.

Your post says you need 64 ounces of herbicide per 100 gallons of water for the mixture you plan on making. For just 2 gallons of water you would need 1.28 ounces herbicide and at least half that amount of surfactant. One US fluid ounce equals two US tablespoons or 6 US teaspoons.

By my calculations you need roughly two tablespoons and 1.9 teaspoons of herbicide to mix in two gallons of water, at least half that amount of surfactant.

Two tablespoons and two teaspoons should equal 1.33 fluid ounces.

Hopefully someone will be along to double check my calculation.

Just curious, what kind of pond vegetation are you treating with diquat?

With diquat you should use an approved surfactant (wetting agent) like Cygnet Plus in your mix to get the results you are looking for.