Yep, 1-2 fluid ounces per tank mix. Cutrine Ultra has the surfactant already mixed in it. BUT, there are shipping restrictions on the Ultra..... No shipping restrictions on Cutrine Plus and Cygnet Plus...

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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).