RAH, a 10 PPB dose of Fluridone will kill the Curly Leaf Pond weed and not harm any native plants. They need 40-45 PPB dose to be affected. If you can get it in the pond early enough before the CLPW sets it's turions you will knock out next years crop too.

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3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).