Cheap bleach for those in the midwest.

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Originally Posted by 7sanders

It was near all of the pool supplies at our Menards... It's labeled "Clear Extreme Pool Shock" (white and blue label) Look for the bottle of neon yellow colored liquid.

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Oh, I did see that neon yellow stuff but assumed that wasn't what you were talking about. I didn't even look at it. Next time I guess.

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Originally Posted by OOsever

The stuff I bought was still in the 4 pack cardboard carrier. There were several loose bottles floating around the display but since chlorine can degrade under sunlight I opted for those in the boxes. Mine had manufacturers date stamps of June 2012, so they were relatively fresh.

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Yeah, I guess yours was fresher than mine. There were no cardboard boxes at my store. They were all loose and on display. I got the ones in the back hoping that they would be better.

How would a gallon of 6% bleach compare to a 1lb bag of shock?

Would depend on the contents of the "shock". If it was dichlor then as far as chlorine goes its pretty close to the same dose as a gallon of 6% bleach. (Though bleach normally comes in 96oz containers) If it was cal-hypo then it would depend on the percent concentration on the packaging. However both dichlor and cal-hypo have effects on other areas of pool chemistry. Dichlor will raise your cya and cal-hypo your calcium hardness. If you need a boost in these areas then it's probably not such a bad thing to use them occasionally but not as your primary source of chlorine, even if you do find some super cheap.

[Have Menards, Will Travel]
Nice tip. I will bring the truck. 25K pool, 95 deg. F, still. Usage maybe a gal. a day?? Just curious. Using up my last granular tonight. BIG SHOCK NIGHT! Then on to less work, better results.
Tanks Guys, or Dolls.

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Originally Posted by waldreps

I bought some of it and did a bucket test and mine showed 10%. I wish somebody could explain the 15% available chlorine and 12.5% sodium hypochlorite. I really think the 12.5% number is the one it's supposed to be. I'm confused by your 14.5% result since I think 12.5% should be the highest you should get. I could be wrong though....it's happened before...lol.

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Weird that it gives the two numbers. I buy liquid chlorine from a bulk supplier who guarantees 12%, but it is higher when he has it delivered. As the higher concentration loses strength quicker, maybe the 15% is the strength when packed, but the 12.5% is what they are certifying to the customer? Seems like odd labeling.

for our 25k pool, uncovered, we have been using 1 gal 6% bleach per night.