Wait to check CYA after refill

[PoolMom1031]

Hi there! I’m anxiously waiting to get another drain and refill tomorrow morning to bring my CYA down in order to slam my green pool.

We just did about 20% drain and refill and it brought the CYA down about 20, from 120 to 100. Water is expensive and we live on a well (with tons of metals in the water), so we are going to attempt slamming at a CYA of 90 or less.

Do I need to wait a certain amount of time to test the CYA? The person filling our water recommended waiting 9 hours, which is one full cycle with our pump/filter.

 

[Donldson]

An hour or two will be more than sufficient. Remember, it's not about turning over the water (we virtually never consider turnover as a necessary metric for anything) but about mixing the water up. An hour or two is more than enough time for the water chemistry to even out.

 

[PoolMom1031]

Thanks @Donldson