adjust cya before or after shocking

Medium yellow meaning matches the color of the 5ppm on the comparator or darker than that?
A one to one dilution (shot glass method - Multiply result by 2) should give you a good idea if you're in range.
Four gallons of 6% bleach should raise your FC 11ppm which puts you at shock level if the initial is 5ppm.
A three to one dilution (Multiply result by 4) should indicate if you're at shock level.
Run the pump, brush the pool, test again this evening and bring it back to shock as necessary.
Are you planning to leave the pump running while you're gone?

Have a great trip!

Medium yellow meaning slightly darker than color of 5ppm. I just retested chlorine with kit and got about the same as before (slightly darker than 5). Then I mixed 1/4 c. distilled water and 1/4 c. pool water and tested and got 5 ppm. so if I multiply that by 2, I'm at 10. Pool calculator says to go from 10 to 15 ppm, I need to add 1 gal., 3 qts and 1 c bleach (6%, I'm clear on that). After I add bleach and scrub, how often should l check to see if I'm at shock level? Also, is 3 to 1 dilution 3 parts pool water or 3 parts distilled water? Can you see that I am getting anal...
Does this sound correct?
Sure, I can leave the pump running. Thanks, I'm off to visit my daughter and her family. My 2 ADORABLE granddaughters (ages 8 1/2 and 7) LOVE the pool and go in NO MATTER WHAT the outdoor temperature is. Sometimes they aren't in long :) They first went "naked swimming" 2 days after Christmas 4 years ago. One of the funniest thing I have ever seen...lots of squealing!
I'll have to add you to my Christmas card list after all this help :)

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Originally Posted by Kateyru

After I add bleach and scrub, how often should l check to see if I'm at shock level? Also, is 3 to 1 dilution 3 parts pool water or 3 parts distilled water?

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During the process of shocking a pool, the more often you can check and bump the chlorine back up, the quicker the pool will clear--it is the consistency of shock level that will kill the algae off the quickest. Every 2-3 hours would be great, but that's not feasible for most people, so at a minimum I would say 2-3 times a day, or however often you can. Also, 3 to 1 dilution means 1 part pool water, 3 parts distilled water--the goal is to dilute the pool sample enough to produce levels that can be read by your tester. You'll love the K-2006 kit--it makes this SO much easier! :)

Janet

Today I can test frequently, yea! so will do that. can't wait for the K-2006 kit.
I just realized that different people have responded to me. THANKS TO ALL!!!!!!!!!

Yeah, we're all sorta interchangeable :)

Enjoy your visit with your grandkids :) :)

Janet

To be clear: leave the pump on only if there is no chance that your skimmer and drains won't get clogged with debris and that your filter won't get filled before your return. Otherwise, do what you can today shut it down while you're gone and go at it again when you get back.

BTW, for 1 gal., 3 qts and 1 c, I'd be inclined to put in two gallons. This is not exact.

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Originally Posted by BigDave

BTW, for 1 gal., 3 qts and 1 c, I'd be inclined to put in two gallons. This is not exact.

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Yep! What he said!

We just had a nasty storm go through so I fished a branch out of the pool, emptied the skimmer basket then checked chlorine. It seems to be at 20. This is 2 hours after shocking. I think the weather is going to be fine till Sunday but, for clarification, if I thought there was a chance that skimmer and/or drains would get clogged or filter would fill, I should completely shut the pump down??? and not leave it on the timer (currently set for about 8 hours per day)?

Sorry, didn't know you had a timer. If you're comfortable having it on when you are away then by all means leave it on or on timer. The concern is that if you're away, unable to check, and something should stop the flow of water, you may end up with pump damage.

That's a little scary...I was thinking that I might "lose ground" so to speak with clearing the algae if the pump didn't run for 3 days. Is it better to just let it run or to use timer given the algae invasion?