You did not ask a question so we don't know how to answer. Please ask a question about the pool water level regulator

I assume it is an outdoor pool and that you are adding sufficient chlorine. Two reasons why it won't hold chlorine. . . 1. No, or insufficient, conditioner. Sunlight will destroy the chlorine if conditioner is not within 50-80ppm. 2. Phosphates and/or nitrates in the water. Get these checked at your local pool store - or send me a water sample if you can't find anyone to test.E-mail me for address.

Simply put any pool can be a salt water pool, even an above ground pool.

Chlorinated

The water polo team is in a car pool.