After shock process, is this much FC loss normal in 2 days??

[ED-209]

Greetings fellow TFP'ers...

I just recently, Thursday morning, completed my 1st shock process and ended with a FC of 32.5 early that morning and figured I would be good for a while so out of curiosity I just did a test about an hour ago and my FC was at 12.5, so I lost 20 PPM of FC in 2 days, is this normal?

I think I've read some posts where higher FC levels do go down quicker but just wanted a sanity check if possible...

It's been around the upper 80's, low 90's these past 2 days, my pool is 15,500 gallons, my CYA is 60 and water temp is 86 degrees.

Thanks so much for the help and info.

Wishing clear pools to everyone (my attempt at a catchy line for this forum)

 

[JasonLion]

Re: After shock process, is this much FC loss normal in 2 da

Yep, that is normal. Assuming all else remains the same, you lose a fixed percentage of your starting FC level. Double the FC level and you lose twice as much each day.

 

[ED-209]

Re: After shock process, is this much FC loss normal in 2 da

Whew, thanks Jason, puts my OCD mind to rest and makes me happy too as I thought I wouldn't be able to get the FC down below shock level by this weekend. Now I get to test out the pool with the new salt level of 1870, originally 370, to see how it is and if it feels better.

Thanks again for the help...

 

[woodyp]

Re: After shock process, is this much FC loss normal in 2 da

It is fine to swim with FC up to your shock level. You're golden.