Bleach degridation

[gary300]

I have been using Chlorox Bleach purchased at Sams Club for a few years now. Since Chlorox changed the SH level from 8.25 to 6.05 percent I am looking for new alternatives. I was in Leslies today (God forbid, only to buy acid) and noticed that their Chlorine was 10 percent and sold for about 4 dollars a gallon. So it looks like Sam's bleach (about $3.30 a gallon, 121 Oz) is about 45 cents worth of SH per gallon and Leslies is about 31 cents per gallon.

I would switch now to Leslies stuff, but have one question:

Will the higher concentration liquid chlorine degrade faster than the weaker stuff?

I know that the concentration will degrade with time and temperature, but am I better off to stick with Sam's club or Leslies?

As a side note, I use a Stenner tank and in SoCal here it gets hot in the summer.

 

[ant 83]

Will the higher concentration liquid chlorine degrade faster than the weaker stuff?

yes.

I suggest buying some of each kind. Then adding a known amount, testing for FC before and after. Then use pool math, and compare notes.

 

[Steve_in_C]

Our local Walmart has 6% "cleaning bleach" for $1.77/gallon. I get with an asst manager and order what I need so that I don't have to shop multiple stores.

 

[gary300]

Thanks for the replies, I appreciate it. What I would like to know, is will higher concentration chlorine degrade faster than weaker chlorine given the same conditions.

 

[Steve_in_C]

Yes. Higher concentrations have a shorter half life.

I've seen some pictures on here of buried bleach plastic barrels. Seems like it could be cooler and darker (if covered).

With 6% bleach I don't even worry about the dates.

 

[Oly]

Check out Home Depot. You can get a 2 gallon case of 10% for $6.86 or buy 4 cases or more and pay only $6.17. Check the date code buy fresh and use it before 2 months.

 

[Richard320]

It's time to look for a HASA dealer. Their locator page is caput, but if you use the contact us page, they can tell you who handles their stuff near you. You ever see those pool service guys drive by with the yellow and orange milk crates in the back? That's HASA stuff. 31.45% acid and 12.5% bleach in returnable jugs.

 

[TheMerk]

Here in AZ we have Fry's (Food, not Electronics!), which I believe is called Ralph's in CA. Some of the larger Fry's here sell Aqua-Tek 10% 1 Gallon 2 packs for $5.99 with your Fry's frequent shopper card. Works out to 2.34 cents per ounce, which is slightly less than the local HASA dealers here.

 

[JoeSelf]

You mean 23.4 cents per gallon. Just used the calculator in pool math app to check. Looked to good to be true.

 

[gary300]

View attachment 79870

Yes. Higher concentrations have a shorter half life.

I've seen some pictures on here of buried bleach plastic barrels. Seems like it could be cooler and darker (if covered).

With 6% bleach I don't even worry about the dates.

Thanks for the chart, tells me what I need to know. Just came home with 8 gallons of the 10% stuff so I will see how it goes.