I am way north of you but I use copper sulfate crystals (small size) at a rate of 15 lbs. per surface acre once the water hits 48-50 degrees in the spring (usually in mid-March). Our ponds are usually good until later in May and then I re-treat (ideally every 3 weeks or so)at a rate of 7 lbs. per surface acre. Use a double burlap bag, pour the CS crystals in, tie on a rope and then drag/troll the bag around the edges of the pond. CS works great.
You can also use Cutrine Plus at a rate of 1 gallon for every 9 gallons of water. For smaller batches, the CP is 11% of the amount of water you use. I recommend also mixing in a little diquat at a rate of maybe 2% of the water you use. 1 gal = 128 ounces so do the math from there. For instance, for 3 gallons of water I mix in 42 ounces of Cutrine Plus and 4 ounces of diquat. And be sure to use surfactant at a rate of 0.5 ounces per gallon of water in each batch...makes a big difference.....and surfactant is cheap.
I always have trouble staying ahead of the FA.....lay off for just a few weeks when the water warms up (June here) and you probably have lost the battle for the rest of the season. Of course, you have to be careful during hot weather to avoid a fish kill with these chemicals. Maybe only treat 1/3 to 1/2 of the pond at a time when the weather is hot. Wait 7-10 days between treatments.
Best of luck. BM61.
Last edited by bassmaster61; 10/22/18 07:11 AM.
