Sam's Wholesale Chlorine

[PoolDoc]

It is *NEVER* necessary to test CYA 3x per week, much less daily.

Under normal operations, your CYA level is a direct result of CYA added (either as CYA or as stabilized chlorine) MINUS any leakage or splash out. Neither sunlight nor evaporation removes CYA. If your pool gets really slimey, you can lose your CYA over a week or so, but that ONLY happens when there's substantial bacterial growth in the pool.

Regarding 55 gallons of bleach for home pools -- NEVER get it in that volume, unless you can keep it cool -- under 75 degrees. Industrial bleach degrades as a function of temperature and purity. Normal purity industrial bleach can go from 10% to 5% in 2 weeks of high temperature storage (> 90 deg F.)

[Lerronious]

I'm trying to get my head around the cost benefit of using liquid bleach (sodium hypochlorite) vs triclor. My pool supply warehouse has 15 gallons of 12.5% at $95 compared to 40lbs of triclor at $85. Running the numbers through the calculator indicates there nearly 3x more FC in the triclor. Being a chemist, I'm definitely on board with most everything advocated on BBB; I just can't get past this on point. And to be clear, I'm not trying to be a wise guy. I just want a clear picture of how I'll maintain my pool this summer with opening day being next weekend.

[PoolDoc]

Being a chemist, I'm definitely on board with most everything advocated on BBB; I just can't get past this on point. And to be clear, I'm not trying to be a wise guy.

BBB is an attitude; not a recipe. I've used bleach -- a LOT of bleach -- in servicing large commercial pools, but I've also used SWCGs, trichlor, dichlor and cal hypo. I've even used bromine (BCDMH), though that was under duress!

Use the trichlor, if your CYA is not already too high.

[dansdad]

no that's good advice on mixing I can buy dry cal hypo and use it not mixing with liquid ch, just when I run out. I ws using a bottle of 12% a week but thanks to this site its been curtailed