I've had my pool for 10 years in North Texas, lived in Central and North Texas most of my life, and I've never seen weather like that. I only lost power briefly, I think for less than 5 minutes, as some computer stuff stayed up. What I did, and thought it was enough, was run my pump on freeze protection, cover my pool equipment with a tarp with a Halogen Bulb on underneath. What happened was the water in my suction pipes froze, pump ran dry, turned it off, water in casing froze and split the casing, and busted some PVC. If I had it to do over, I would have drained the system and blown the pipes dry back to the pool, which is what I should have done when the pump ran dry. But, I discovered that in the middle of a snow storm and Below 0 Temps so wasn't thinking straight I guess. I did open the vent on my DE filter and let it drain to the pool which I think saved it.
