Big Fish Cliff,
The very best advice I can give you is to contact Kelly Duffie...you can get his e-mail and/or phone number from the link I sent you. He is a straight shooter.
Reward goes a long ways...one gallon will treat a bunch. For example, a few weeks back I used 1/2 gallon of Reward to sucessfully treat pondweed in a 3.5 acre pond. I'm not familiar with "Mesquito weed ".
Have you tried grass carp? A couple of them in a small pond can be very effective on weeds. However, most fish suppliers in Texas will not sell them in the summer because of the heat and resulting stocking loss.
I'm not a proponent of using chemicals, in fact use them only as a last resort. I lost my grass carp this spring to escape over the spillway and have had to resort to chemicals to have a chance at fishing.
Welcome to the forum...and let us know what happens. Thanks.
