A 12.5 to 25% REWARD:WATER solution might be a little stout. You would only be able to use 16 to 32 gallons of this mix per acre (.37 - .75 gal/1K sq. ft.) while staying within labeled use-rates. That can be a tough challenge with hand-held equipment, without creating a drift-prone spray pattern.
Though everyone treats with widely varying water-volumes, 4 oz. of REWARD per gallon of water, applied at roughly 1.5 gal. of mixed-solution per 1K sq. ft. should be very effective. As mentioned above, use very clean water to mix with the REWARD. Also, CIDE-KICK II (d'limonene) @ 1 oz./gal. of mixture works wonders with REWARD.
ALSO: WEEDTRINE-D is a much diluted formulation of REWARD, with a price tag that may be a more easily digested by pond owners with less than 1/4-acre to treat (though much more costly per lb of active-ingredient). However, mixing rates for WEEDTRINE-D do need to be adjusted (upward) to allow for its lower amount of formulated active-ingredient.
