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

[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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