How much water to drain from a vinyl pool

Jableo

Member
May 24, 2021
5
Denton, Nebraska
Pool Size
16000
Surface
Vinyl
Chlorine
Liquid Chlorine
I am new and posted on the "Introduce myself" thread. One of the recommendations was to exchange a lot of water for a fresh fill replacement with no metals. After reading some of the past posts on TFP, I see that it is not a good idea to completely drain a vinyl pool. I have already started draining water. How much water do I take out so I don't stretch or rip the vinyl? I am not sure how old the vinyl is. I would guess over 10 years. I thought it would be a good chance to completely drain it and scrub the bottom clean but I don't think I want to do that after reading more.
 

cowboycasey

Gold Supporter
LifeTime Supporter
TFP Guide
Jul 3, 2013
7,616
Southern OK
Pool Size
15000
Surface
Vinyl
Chlorine
Salt Water Generator
SWG Type
CircuPool SJ-40
No more than half as long as the water level in the ground is down.. If you have a high water table I would not go half... Do you have a sump pump to lower the water level on the outside of the pool?
 

Jableo

Member
May 24, 2021
5
Denton, Nebraska
Pool Size
16000
Surface
Vinyl
Chlorine
Liquid Chlorine
Thanks but I don’t know what the water table level is. I’m using two sump pumps to remove water. Emptying it into the lagoon which is well below the pool level.
 

cowboycasey

Gold Supporter
LifeTime Supporter
TFP Guide
Jul 3, 2013
7,616
Southern OK
Pool Size
15000
Surface
Vinyl
Chlorine
Salt Water Generator
SWG Type
CircuPool SJ-40
Watch the liner like a hawk.. as it goes down if you see anywhere that the liner is coming away from the wall that is likely water behind the liner... instantly stop draining and start filling..