My pool readings from the pool store


Active member
Apr 20, 2008
OK I have been trying the BBB method for the past month and I cant seem to get my PH balanced or my chlorine to stay. It looks like my CYA may be the culprit and I have started a water change and am changing my sand out and going with zeo brite.

FAC- trace amounts
TAC -1.0
PH 7.2
TA -40
CYA- 120
TDS 950
Phosphates trace.

Already have the water drained down and the sand changed. I am now cleaning the old silcone caulk from around my inlets and skimmer and recaulking with silicone. When I started scraping the old shrunken caulk away from around the inlets I found green algae. same for the skimmer basket, so I took a spray bottle of straight 6% bleach and sprayed till it ran clear.

My pool is a modified grecian style fiberglass and the caulking was original and 6 yrs old si I guess this maintenance task was due.


TFP Expert
Platinum Supporter
LifeTime Supporter
May 7, 2007
Silver Spring, MD
I addition to reducing CYA you should also increase your TA with baking soda. You should bring TA up to 80 or 90.


Active member
Apr 20, 2008
Thanks for the advice. I have made the trip to Walmart and have the 4 lb Arm and hammer boxes and 20 mule borax, sitting on the sidelines. With such a large drain and fill ( about 40 %) and the possibility of another one if needed, I thought I should just wait till the CYA is lower before throwing anything else at it.

Love my pool, hate pool maintenance
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