Ta Low And Ph High...please Help!

[torizoe]

First of all... thank you all for having such a great forum. I've been reading this section for a couple weeks getting ready for our spa. I thought I was ready. Ha!

We bought a used 2006 Sundance Optima. Performed the decontamination process. Did a fresh fill yesterday afternoon and then things started to go downhill.

3/7

Fresh fill:

Pulled water before completely filled:

CH 50

TA 50

pH 7.3 or .4

Went to spa store and had them test water. This water was after pumps were on and water heater on but water not heated:

CH 60

TA 50

pH 8+ ( she tested twice)

Came home and testest the extact same water (from same bottle I took to Spa store):

CH 60

TA 50

pH 7.5 (test twice)

Added 12 TBS of Calcium (according to directions)

Ran pumps for 30 minutes:

CH 150

TA 60

pH 8 or higher

Added 3 caps of Gentle Spa, according to bottle directions.

Waited about 15 – 20 minutes.

Added add’l 5 TBS of calcium.

Waited about 20 minutes:

CH 200 maybe 190

TA 60

pH 8 or higher

Added a capful (approx ½ oz according to label).

Waited about 20 minutes:

CH 200

TA 60

pH 8 or higher

Added 2.5 capfuls (approx 1 ¼ oz):

Was gone for 2 ½ hours:

CH 180 (maybe when I test at 200 I was going for a darker blue. 180 is a light blue but blue not purple)

TA 50

pH 7.7 or .8

At this point it is late and I can’t mess with it anymore. I don’t want to leave it without adding any sanitizer so I go ahead and insert N2 cartridge and add 3 tbs (little less) of dichlor. (Followed N2 directions for amounts – 1 ½ TBS for 250 gallons.)

3/8

7 am

CH 170

TA 60

pH

[brianthepoolman]

I've been reading this and wondered if this tub had an ozone machine, if it does then ozone regulates the PH to a higher reading around 7.8 to 8.0. no matter what u do you cannot lower it.