cost

[Dubosity]

This is great info! And I love the new Pool Calculator (it may not be "new"...but I haven't seen it before).
Given that my local pool store does not charge for the jug, I've done the math and it is DEFINITELY cheaper than the bleach...cuts the cost by more than half! I'm concerned about shelf-life though. I don't know how long a jug will hold its strength, but if I buy enough for 1 week (which, I'm calculating to be about 2 jug's worth) then I can just make a weekly trip to the pool store. My questions are:

1) How long will a jug hold its strength (if kept in a cool, dark place)?
2) If I'm unable to get to the pool store, is it okay for me to supplement with the household bleach - ie, will there be any weird reactions if I add bleach after I've been using the pool-store chlorine? (I'm thinking the answer to this is no, given that they are both sodium hypochlorite and the pool-store one is just stronger...but I just want to confirm.)

It will also be great not to have all the plastic bleach bottles in my recycle bin every week!

[madwil]

the jugs are not likely to lose much weekly, when kept cool/dark/sealed (cap tightened)
You're pool doesn't know the difference between LC and bleach once it is in the pool- don't mix chemicals direct (this isn't a problem with bleach/LC, but good practice!) but add to pool will be fine without reactions...
I bypass the weekly recycle- got a small trailer that the bottles go in, carry to center at end of summer- 1 trip! Of course, I got the space to do that...

[Dubosity]

cool. Thanks!

[Yeggim]

Wow. That's less than .7 cents an ounce of household bleach. If you can beat $2.50 a gallon of Walmart bleach by half, that's $8.80 for a 5 Gal carboy of 12.5%. I'm paying $16.95 a carboy.

[sunofthebeach]

I would gladly pay more for the convenience of not dealing with 7 empty plastic jugs of bleach and making two trips to Walmart everyweek.

Yeggim,
Thanks for the info. My CYA is low so I will be switching to Trichlor for a couple of months.

[Yeggim]

I would gladly pay more for the convenience of not dealing with 7 empty plastic jugs of bleach and making two trips to Walmart everyweek.

Yeggim,
Thanks for the info. My CYA is low so I will be switching to Trichlor for a couple of months.

Keep track of that Trichlor. It has a 10 to 6 ratio of Chlorine to CYA. Every 3 lbs of Trichlor will raise CYA by 10 in a 20,0000 gal pool. A 40 pound bucket will put about 130 CYA in the pool.

[PoolParadise]

Someone help!

What is a carboy?