Strange PH readings

Algae problems in swimming pool water.
Green (cloudy) water or slimy pool walls.
Black algae. Mustard algae. Pink or white pool mold.
fjdavid
Pool Newbie
Pool Newbie
Posts: 4
Joined: Fri 25 Jul, 2008 16:19

Strange PH readings

Postby fjdavid » Fri 25 Jul, 2008 16:20

I have been working on an Algae problem this week. After reading these forums, I tried the 6% bleach method to kill the algae. My pool is above ground 18' dia so its about 7500 gallons. I put 1/2 a gal of bleach in Wed evening and then 1/2 again last night. the algae is not gone yet, but I checked the PH and it started out at 6.8 and as I let the sample sit for a minute or two I looked back at it and it was Purple. Well over 7.8 what would cause the PH to change over time like that and is the initial PH the only reading I need to worry about?

My Chlorine level is at 3.0+
PH 6.8 to 7.8 over 2 minutes
total alkalinity is 100 ppm
and that is all my test kit will give me. I also ordered a Taylor K-2006 Test Kit to get better information to post and to learn.

thanks for any suggestions you can make
Frank


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