Mike, get a pool thermometer or an indoor/outdoor thermometer and take water temp readings. The fish will tell you when they don't want to eat anymore pellets, and that's usually in the low 60°F range. There's no set date, it goes by water temp.

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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).