Draining a pool

[filmdog]

I have high CYA (the TFT test kit confirms it at 100) and my chlorine level won;t go back to a normal range after two shocks to defeat algae. So I want to drain my pool by 1/3 and get the shemistry back to normal. Anything I whoul dbe aware of or careful of when I drain the pool? I am using two submersible pumps.

Thanks.

 

[JasonLion]

In a plaster pool the only thing to watch out for is a high local water table. You don't want to drain below the depth of the water table. This is rarely a problem for a partial drain this time of year unless your pool is located in a swampy area, or right next to a lake, or it has been raining a great deal recently.

 

[filmdog]

THanks. One third should take it down two feet. Sounds like I shouold be okay, no?

 

[danacc]

Current water level conditions compared to the land surface at monitored wells in New Jersey can be found here: http://waterdata.usgs.gov/nj/nwis/current/?type=gw. If you click on the well nearest you, it will show more information, including changes over time. That should help confirm what is safe for you to drain.

 

[filmdog]

This is helpful. Thanks.