My question is what defines a deep freeze?
A Deep Freeze is just a long period of 32 degrees or below. This will freeze water that is not moving. By leaving your filter own you are preventing a freeze. The good thing is you have a concrete pool so no damage of the pool is to be a concern. The concern is the filter system.
Now what we do with our stores' inground pool is we just drain it below the skimmer and blow out all the pipes. We dont use a cover because that can be a pain. You can do that but you do have to brush it. So i say keep it open until you are finished brushing and then hire a pool company to drain and blow out the pipes and put a temp. cover on (optional) but that would be the safest bet. Note: Always keep your filter running through out the night when it gets cold so that nothing freezes. But during the day if its nice and the sun its ok to turn your filter off if you are worried about your electric bill.
I hope this helps you in any way. If you have other questions feel free to ask. snipped-for-privacy@niagarapool.com
Boom Stick wrote: