GH, quickly we kill quite a bit of coontail every year. You can use the 25 gal ATV sprayer and apply 1.5 gals Reward per weeded acre along with good srufactant ( yes it helps even under water) and maybe add liquid copper if you have algae growing along with the coontail. Your total cost for this would be around $500 far less than Sonar. Aquathol might work as well we just prefer to use Reward and it has worked well for us when applied correctly. Also not sure why you want it b/c water primrose in our case is also invasive.


Greg Grimes
www.lakework.com