Opinion on test results

[Manny2587]

Hello everyone,

Pool opened smooth a few weeks ago, water was clear when I took the cover off. Haven't had any problems, just want some opinions on my numbers as of this morning.

35,000 gallon vinyl liner.
Bleach as chlorine source
Sand filter. I run the pump for 10 hours right now, 9am-7pm. Water is only 70 degrees (central Maryland).

FC- 2
CC-0
TC-2
PH-7.2
TA-40
CH-125
CYA-30
Borates-30 (I had it at 50 last year, lost some after closing and opening from water lose/refill)

PH was at 7.5 upon opening. I haven't added anything to the pool this year except chlorine. It's at 7.2 now which is fine with me, but curious if I should bring the TA up a bit. I added some chlorine after the test today to bring it to 4.

 

[duraleigh]

I would bring the CYA to 40-50 and then run FC around 5-7 ppm.

 

[waskydiver]

If it was me... I'd just keep an eye on the pH...

If it gets any lower notch it up with baking soda or Borax.

That will add more buffering, and raise your pH, without chasing numbers, which could lead to whack a mole.

 

[duraleigh]

If it gets any lower notch it up with baking soda or Borax.

The pH will likely rise on it's own. Nevertheless, baking soda will have little affect on pH.......it is used to raise TA.

 

[waskydiver]

The pH will likely rise on it's own. Nevertheless, baking soda will have little affect on pH.......it is used to raise TA.

I wasn't thinking of adding the baking soda to raise the pH. More: the higher TA will give the pH a greater tendency to rise on it's own, and find an equilibrium at a higher pH.

Or am I wrong?

 

[duraleigh]

Keep it simple.....use baking soda to raise TA, use borax to raise pH