how much shock is too much?

[justgrapejuice]

You are confusing the best guess table with bleachcalc. the best guess table is here
http://www.poolforum.com/pf2/showthread.php?t=365
Bleachcalc will not work on a mac.

Since there is not a Bleachcalc for a Mac, is there something that I can use to determine my needs?

Oh, BTW thanks for the best guess table info.

[waterbear]

1 gallon of ultra bleach will raise 10000 gal approx 6 ppm
1 gallon of regular bleach will raise 10000 gal approx 5.25 ppm
Call your pool 20000 gallons to make the measurement easier so I would add enough to keep the pool at about 12-15 ppm until the algae is gone.
another way to look at it is 2 oz of ultra bleach will raise 1000 gallons about 1 ppm so every 36 ounces (call it a quart to make it easer) will raise your pool just about 1 ppm or slightly less.
These are approximations but should be close. Test the water and make adjustments accordingly.
Hope this helps.

[justgrapejuice]

Thanks so much, i really love this site. Everyone is very helpful and quick to respond!

[justgrapejuice]

Also, are there test kits to test the chlorine levels above the 3.0 mark? Also, what is the method you are using to calculate to check the higher Chlorine levels?

At what level would the chlorine level be too high to swim in?

I have a above ground doughboy 13,000 pool, will the higher levels when I shock be okay for the liner?

Thanks

[waterbear]

any FAS-DPD test such as the one in Ben's kit or the Taylor K-2006 will test high free chlorine levels.

[waterbear]

Also, are there test kits to test the chlorine levels above the 3.0 mark? Also, what is the method you are using to calculate to check the higher Chlorine levels?
If you do an advanced search in the forum for 'shot glass method' you will find a way to approximaty test high chlorine levels with an OTO test kit
At what level would the chlorine level be too high to swim in?
This depends on your CYA level
I have a above ground doughboy 13,000 pool, will the higher levels when I shock be okay for the liner?
Once again, this depends on your CYA levels
Thanks

hope this helps....first thing you need to do is get a good test kit like the one sold on the sister website www.poolsolutions.com or a Taylor k-2006

[justgrapejuice]

My CYA level is 30

BTW, Thanks again...

[aylad]

The dpd./fas test in Ben's kit will test accurately up to 50 ppm. Alternatively, if you have one of the OTO kits that measures up to 3, you can dilute one part pool water with one part distilled water, and test from a thoroughly mixed sample, then multiply your results by 2. If still too yellow, then dilute 1:2 and multiply by 3. It's a ballpark, because you lose a little accuracy with each dilution, but it'll be enough to get you started.

What level of chlorine is safe for your pool depends on your CYA level, and you really need to have an accurate number to determine correct chlorine levels to kill the algae. If you stick with the best guess table, it'll be okay for your liner.

Janet