# Thread: What is my shock level supposed to be?

1. ## What is my shock level supposed to be?

My pool has been sparkling clear all summer, I have been just tweaking my Autopilot setting keeping between 3-5 FC levels, and all has been well. 5 days ago it got cloudy, I shocked it (15) but didn't keep it there though, and today it is still cloudy. I thought my shock level was 15, but am I using the Pool Calculator right? It is saying 23 is my shock level? Here are my numbers:

FC - 3.5
TC - 3.5
PH - 7.6ish
TA - 100
CYA - not sure, out of reagent, it was 60 on 8/2 and I added about 2 lbs of CYA
Temp 86

It may have started to get cloudy when I added the CYA... not positive though.

So is it really 23? If so, I will get it up there and get this thing cleaned up!

Thanks, Chuck

2. ## Re: What is my shock level supposed to be?

2 lbs of CYA in 27,000 gallons would raise the CYA level by almost 10. If it was 60 before, then it should be about 70 now.

With a CYA level of 70, your shock level is around 20.

3. ## Re: What is my shock level supposed to be?

Jason, thank you very much. I am getting used to the calculator, it is a great tool.

--Chuck

4. ## Re: What is my shock level supposed to be?

Hi Chuck1971
I am new here, and I am reading through this and I mean no direspect, I am trying to learn so I can understand for my own sake. My question is why would you add CYA if your level was 60? What am I missing?

by the way-1971 was a great year!

5. ## Re: What is my shock level supposed to be?

Originally Posted by kidsluv2swim
Hi Chuck1971
I am new here, and I am reading through this and I mean no direspect, I am trying to learn so I can understand for my own sake. My question is why would you add CYA if your level was 60? What am I missing?

by the way-1971 was a great year!
Recommended CYA levels for a SWCG is 60-80 ppm

6. ## Re: What is my shock level supposed to be?

Dangit FPM, you beat me to it!

Although I'll add that the higher CYA level helps prolong the life of the SWCG cell.

7. ## Re: What is my shock level supposed to be?

Exactly... See I can read and learn how to do this correctly!!!!

I bought the largest cell possible for the SWG also, knowing it should last longer.

--Chuck

8. ## Re: What is my shock level supposed to be?

You guys know everything, that is why I love this forum!

#### Posting Permissions

• You may not post new threads
• You may not post replies
• You may not post attachments
• You may not edit your posts
•