Pump operation during freezing conditions

[mas985]

I won't go as far to say that it would never freeze because if it gets cold enough, it will still freeze but that would require much lower temperatures (e.g. < 0F).

A 60 watt (incandescent) should provide more than enough heat.

If interested in the physics of freezing, you can read this thread.

As for the other questions:

http://www.poolforum.com/pf2/showthr...x-and-Freezing

http://www.poolforum.com/pf2/showthr...c-acid-storage