Pool open & sub freezing for days

WhitB08

Bronze Supporter
Apr 1, 2016
151
Murfreesboro, TN
This year I decided to leave the pool “open” so I could do an AA treatment for some staining aquired over last winter. I’m in middle Tennessee and I’m really regretting that decision! We have been well below freezing for a couple of days and this morning we actually reached as low as -7, possibly -8. Before the freezing temps, my husband put some insulation batting and a tarp over everything except the heater. My pump has been running nonstop, but even still, this morning the pool water temperature was reading 31° and I have quite a bit of ice on the top. We checked the skimmers, and there is no ice there, but with the upcoming weather, I am worried that I’m fighting a losing battle.
If we lose power, I want to be prepared. I understand if power goes out I immediately need to flip the breaker, go to the pad and take the top valve off the filter and take the filter drain plug out, remove the pump basket top and drain plug and the heater drain plug. My question is about the pool plumbing that has water in it at the pool like the returns and skimmers. We are unable to lower the water level when the pool is winterized because I have a large shallow tanning ledge and losing more than a couple of inches of water causes it to completely rip out. Because I don’t completely feel comfortable with the process (and yes, I have read all of the articles) I let a pool guy winterize. I don’t know how he takes care of this without lowering the water levels.
Also, in the event that it just gets too cold that running the pump nonstop is not enough to counteract the pipes freezing, what exactly am I looking for to know when to turn everything off and do I follow the same steps above? The only thing I know to do is to constantly monitor the pool surface and look for movement. That’s going to become more difficult as ice increases on the surface. I do have a Hayward aqua pod remote that shows the pool water temperature when the filter is running, but I don’t know if that would indicate anything different if things started to freeze up. Here is a look at the forecast. Current water temp is now showing 32.
 

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Overall you have a good plan. Remember that the pump has 2 drain plugs - one under the basket and 1 under the impeller housing. Also, put a empty plastic water bottle (with cap) or short length of pool noodle in the skimmer to keep it from freezing and cracking the skimmer.
If you can maintain the pump running and the skimmer free of ice then it should continue to circulate which will keep the returns and above ground pipes at the pad flowing. Flowing water will prevent icing - even if water is at 30degrees.

I would not lower the water level and hopefully it is unlikely that ice thickness will be no more than an inch, if that much. Since you have a vinyl pool I would not break up ice in the pool as it could rip the vinyl

I see you have a slide and deck jets. Did you drain the lines that may be exposed above ground for the slide? Or you can run the deck jets occasionally.

On the forum I remember reading some members have put a screen or some sort in front of the skimmer to prevent ice forming there. Maybe @Newdude has some ideas as well.
 
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Thanks for the input! I did go ahead this morning and drop a plastic bottle In the skimmer. Do I need some antifreeze in the bottle? If so, I only have regular antifreeze, not pool/ RV. Does it matter considering it’s just a capped bottle?
 
On the forum I remember reading some members have put a screen or some sort in front of the skimmer to prevent ice forming there
It's half a dozen or 6. The concern is that small ice chunks fill the skimmer basket and become a block of ice. If you screen(etc) the front of the skimmer it just shifts where it happens.
Do I need some antifreeze in the bottle? If so, I only have regular antifreeze, not pool/ RV. Does it matter considering it’s just a capped bottle?
You just want to weigh down the bottle some so it doesn't completely float. Using antifreeze will keep it liquid, but pebbles or dirt works too. The mostly empty bottle will crunch if any ice needs to expand.

The skimmer pipes should be ok because they're 6 to 8 inches down and you'll get 1 or 2 inches of ice at most.

If it ever is an issue again, aim the returns up to create more surface movement.
 
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