Low Chlorine Problems

[PoolDoc]

Noted and corrected. Thanks WM.

(The Color Q *is* substantially better than strip readers, but still is a colorimetric method, and thus much less accurate than the 3 or 4 decimal point results imply.)

[nscclukas]

Tell me if this sounds right? I added the 4 gallons of 15% LC, scrubbed & vacuumed, thought I'd check the Cl before calling it a night, say 2 hours later.
Fcl:4 Tcl:5.6 Can the algae be eating up that much Cl? Or do I have old weak bleach & that's why I can't get ahead?

[Watermom]

Can the algae be eating up that much Cl?

In a word, yes. Keep hammering it with bleach. We really aren't going to be advise you too well without a CYA reading. That is a critical value to know when you are trying to clean up an algae bloom.

[nscclukas]

Yes weak Cl? Or, Yes the algae can consume that much Cl?

My first couple posts I explained my CYA is high 125+ my tester only goes that high. I could dilute &multiply multiply if necessary, but I'm pretty sure it's below 200.

The local pool company said my CYA was168 about 6 weeks ago, but he said he couldn't give me accurate readings because I was keeping the Cl level too high at 8. He insisted that I shouldn't have the Cl over 3, said it wasn't safe for swimming & I a waste of $. I tried to explain to him that as CYA levels rise, the need for higher Cl levels, but he disagreed, said he's be doing pools for 30 years & knows better. I said, well of course, you make most your $ selling shock, algaecide, & other unnecessary stuff, not off of helping customers maintain a good clean healthy pools.

So, needless to say, he wasn't very happy with me.