SLAM with 0 CYA?

[tdkorson]

Moved from here.
My pool hasn't been opened in a couple of years. I'm now opening and Slamming, but my CYA is 0, so adding chlorine in the day is a waste. Can one slam effectively by only shocking at night? Recommendations?

 

[Newdude]

Can one slam effectively by only shocking at night

No. The sun will burn off your FC in no time the following morning leaving you with 0 FC all day. Algae grows exponentially and it will probably win that battle in the down times.

 

[tdkorson]

ok - so if I add CYA, I can't backwash, but probably should. If I don't add CYA should I go ahead and add chlorine during the day anyway?

What should I do?

 

[mknauss]

Follow the SLAM Process. The CYA needs to be at 30 ppm. If added via the sock method, backwashing only sends a small amount out with the water.