Ideally the start up procedure is run for 15 minutes the first day, then each day double the run time. But, at that water temp I would be tempted to run it 24/7 from the get go.

If you are on the property every day, it's better to play it safe and go the doubling time route.

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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).