Ditto on the pumping and nuking. Either hydrated lime or Rotenone, but reduce the volume of water that needs to be treated to a minimum. You CAN drain the water with a gasoline pump. Been there, done that plenty of times.

Just remember to hit any puddles that are left, not just the biggest puddle.

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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).