Liquid Chlorine (Bleach) concentration or lack thereof...

[kelemvor]

An "easy" way to check and adjust more than once a day for working folks is this. Test and adjust when you get home from work, before bed, and when you get up in the morning. You would be well served to have more than one of those jugs on hand while shocking. Personally, I'd have three - assuming they're the 2.5 gallon jugs common in FL. When you're done cleaning up the mess, most stores will give you some kind of refund for the returned extra jugs.

Most pool stores don't sell the K-2006 (the big Florida based pool store chains do not), and you don't want the K-2005 which they do sell. http://poolforum.com/pf2/showthread.php?14994 This link tells you about test kits. You can get a cheapie "HTH" kit from walmart while you wait for a good test kit to come in from amazon (or some other place). The page I linked talks about the HTH kits and also provides links to the better kits.

[Isailer]

I have the K-2006 FAS-DPD test kit... I simply expected the chlorine levels to measure higher than 4ppm after adding 3 1/2 gallons of 10.5% LC to a 10,000 pool with such a light bloom but according to Carl, I may have been mistaken. I did test for copper and none was detected. I did some more reading and found a way to test the LC's concentration by diluting it so I'll give that a try. Thanks for your help.

[PoolDoc]

Bleach concentrations *should* be up to par, this time of year, when it's not so hot. In summer? Not so much.

But, as you've been told, algae can 'consume' bleach almost instantly, till it's dead and fully oxidized.

If you want to compare, buy Walmart bleach (8.25%) and see what sort of result you get. I'm pretty sure their bleach will be close to spec, though I have not tested it.

[Watermom]

Once you get this bloom cleared up, make sure you keep your chlorine up so it won't happen again. Chlorine levels are based on your CYA readings. You can read more about this in the Best Guess Chlorine Chart in Ben's signature above.

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