Never quite sure.

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I don't mind making my own bleach.  Using it for purifying drinking water?  That I am not so sure about.  Why?  Well, they seem to hide what the extra ingredients are.  If those extra ingredients are fungicidal, algicidal, or both, those are poison for humans too.  As to strength?  While that might be a slight issue, in an short term, in the longer term that will take care of itself.  Bleach simply breaks down over time.

So, I will make bleach, for laundry and cleaning uses, with the pool shock I have.  But I won't use that for water preservation.  Oh, and something a lot of people don't seem to realize?  Water is only good, if treated with a non algicidal or fungicidal bleach, for about a year.  After that, things will begin growing in there.

As well, putting water in old milk jugs, soda jugs, and such?  Even if sheltered in a dark space... a closet, basement, or such?  Beside the potential leaching of plastics and other chemicals, those containers only last, perhaps, a year.  They do break down.  I've tried to tell people, but... they... just don't believe.  Well, until they end up with a mess.  Of course, for some reason, they are angry at me for my warning.  I just don't get some people.

Oh, how do I identify, and what are my pronouns?  Conspiracy theorist, and I/told/you/so.  *smile*  Yea, I... finally went with the gig.  Probably not in a way that makes the little faeries happy, but... so!  I'll say it again, I/told/you/so!  Ha!

Anyway.  The variances in measurements are pretty large.  Anywhere from 2/3rds teaspoon to a heaping teaspoon per gallon to make regular bleach and (if it is legit, non algicide or fungicide) from a pint per 12.5 gallons to half a cup for five gallons, and... others.  Though, to a degree, it depends on if it is pure calcium hypochlorite or cut with inerts.

Anyway, since mine isn't pure, I'm going with the higher amounts.  Then to figure out how to store the rest of the bag.  But, yes, finally, I will be making my own chlorine.  Why?  Have you seen the price of chlorine at the store?  $12 to $15 a gallon!  I have some purposes that requires a bit more chlorine than usual.  Even one gallon a month really adds up.  And, making it myself?  I can probably cut that to around $2 to $4 dollars a year, and that one bag may well last four to five years if stored rightly.  So, yeah.  I'll do that.  Making my first gallon today.  Right after this post.

Do your own homework.  Consider what is important, what risks you want to take, and do it or don't.  I'm curious to see how it works out.  Hmm, may post a question online, see if the manufacturer will answer the question, as to whether the stuff contains algicide or fungicide.  Or, try to find a phone number for the manufacturer, and call them.  Would be very good to know if I can use this for water storage.  If so, I might put some water up.  After these last few days, I... remember that I forgot to store water.  Have to change it over yearly, but... worth it... I see, I see.

Later.