If your water temps get into the 50's during the winter, then the Tilapia will most likely die.

Pure Blue Tilapia can survive down to 45�F if it's a spike down and back up, but they usually succumb to bacterial infection or other stressors before that if it's a gradual cool-down.

Last edited by esshup; 07/05/13 04:21 PM. Reason: clarified temps
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