I guess from my standpoint cost is a big factor, if I'm calculating correctly - a 4 acre/ft treatment with aquathol can top $500, while a chelated treatment plus a little reward for kick runs about $350 for the same pond. I'm definitly going to play with rates and applications this summer to get a true line on cost effectiveness. How long does Aquathol keep the weeds down in your experience? Chelated and reward seems to last about a month for me. Also, do you use reward with aquathol and if so, what rate?
