First time doing pool duties

Algae problems in swimming pool water.
Green (cloudy) water or slimy pool walls.
Black algae. Mustard algae. Pink or white pool mold.
I'm new here
I'm new here
Posts: 1
Joined: Mon 18 May, 2009 13:51
My Pool: 19000 gallon vinyl kidney pool
Location: waukesha, wi

First time doing pool duties

Postby newpoolbie » Fri 22 May, 2009 19:55

HI it's my first time cleaning my parents pool and i've been reading this forum since i've started. I've been keeping the FC level high (I think but their test kit isn't too accurate) but it seems their CYA is 0? Yeah I know we really need to get one of those taylor kits. But it seems kinda hopeless because i've been keeping my eye on the fc for 6 straight days and the water is still green... any advice?

chem geek
Pool Industry Leader
Pool Industry Leader
Posts: 2381
Joined: Thu 21 Jun, 2007 21:27
Location: San Rafael, California

First time doing pool duties

Postby chem geek » Fri 22 May, 2009 20:20

If the CYA is really zero, then the FC will drop by half every half-hour in direct noontime sun so are you sure 1) you have no CYA and 2) that you've got measurable FC in the pool at all times? If the CYA is truly zero, then the easiest way to increase it while also adding chlorine is to use Dichlor since for every 10 ppm Free Chlorine (FC) it also increases Cyanuric Acid (CYA) by 9 ppm.

Read Defeating Algae for more info on clearing the pool assuming it's algae (and not clear green of copper).

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