observation

[ChuckD]

To you Clorox bottle sloggers:
You may also be able to do as I do; my local pool store, a Mom and Pop operation, stocks 5 and 10 gallon 'carboys' of 12.5% chlorine. Take note of how long they've had it, the shelf life is much shorter than Clorox. But it's made chlorinating much easier for me. Twice the concentration goes twice as far.

C.

[Mom2Czars]

I generally buy the ~1.5 gallon bottles of bleach, and only 3-4 at a whack, so I don't get the curious stares from people. It does take somewhat more effort in the sense that you monitor it more closely, but it's literally less than 10 minutes a day (for me). So much easier than having to deal with an algae bloom, really. I used the pucks a little at the beginning and they really caused the pH to go out of whack.

[Spensar]

To you Clorox bottle sloggers:
You may also be able to do as I do; my local pool store, a Mom and Pop operation, stocks 5 and 10 gallon 'carboys' of 12.5% chlorine. Take note of how long they've had it, the shelf life is much shorter than Clorox. But it's made chlorinating much easier for me. Twice the concentration goes twice as far.
C.

It's worth checking the yellow pages and asking around about industrial suppliers as well. I had seen a sign in my end of town for a while saying they sold chlorine, but was content to slug Walmart bleach. I finally dropped in and found they sell 12.5% at $6 CDN for 10 litres (about US$5.30). At PPM that's about 1/3 cheaper than Walmart's bleach. They guarantee 12% and I believe he said it's 12.8% when delivered. Needless to say, they go through a ton of it and its pretty fresh.