Small leak -- how to plug inlets and outlets?

[rlaw]

An evaporation test with a bucket shows the pool is losing about 1/4" a day more than the water loss from evaporation in the bucket. This is constant regardless of whether the pump is running or not. I read the Leak Detection article and was wondering how to go about plugging all the inlets and outlets. I guess the returns and skimmers could be done with a wad of cloth or plastic, but what about the drains?

There are some hairline cracks in the plaster on the steps. I tried squirting dye around those but didn't detect a leak there.

 

[Texas Splash]

There are a variety of plugs designed to close-off lines in a pool. Take a look at these for example:

3/4" Pipe Nylon Winterizing Plug | In The Swim

Winter Plug #3 for 3/4 & 1in. Pipe

www.intheswim.com

Amazon.com : pool rubber expansion plugs

For the drain, you main need to remove the cover to see what type it is and what your options are.

Water Leaks - Further Reading

www.troublefreepool.com

 

[ajw22]

Look at Winterization Plugs.

 

[rlaw]

I live in San Diego and have never winterized the pool. I will look into those plugs.

Thanks!

 

[YonnyPiscinas]

Interesting. Like the bungee plugs.

As I have my pool so hot 90-96F while the night time temp falls to mid-50s even during late summer now I have cold convection currents coming out of the jets, must be obviously from the underground piping and area around pump/filter above ground. Quite surprising amount of cold coming back into the pool at night time.
I guess these plugs would prevent more cold coming back into our big hot tub.