Closing ABG pool

[Beth222]

My pool is still up in Central Ok.
It’s been unbelievably warm.
I have never closed the pool this late.
Waiting until the water temp is consistently around 55 degrees.
My question(s) are:
- do I need to put in liquid chlorine at shock level to close?
I was told the chlorine is in ineffective at this temp. algae cannot grow in this temp.
- how long does it take the tank to drain?
Don’t want it to crack should I not allow suffice time before a freeze hit.
-do I need to put liquid chlorine in much slower due to the water temperature?
Since cold water is denser than warmer water.
Thank you

 

[wireform]

do I need to put in liquid chlorine at shock level to close?

Yes

I was told the chlorine is in ineffective at this temp. algae cannot grow in this temp.

Algae can grow just at a slower pace and it's needed so when the water warms up hopefully there will be some residual FC.

how long does it take the tank to drain?
Don’t want it to crack should I not allow suffice time before a freeze hit.

What tank are we talking about

do I need to put liquid chlorine in much slower due to the water temperature?

Winter uses very little FC so a little goes a longer way. Testing at these temperatures will give you an idea of when it needs more.