Do I need to be concerned with TA and calcium hardness??

[mommak]

Thanks Watermom. Here's my results from testing last night
TA -40
CH - 90
pH- 7.4
FC - 7.0
CYA - 50

[Watermom]

Your numbers look just fine. Your TA is low but it's no problem unless your pH is wandering around. Then, you could bump it up some but otherwise, don't worry about it.

Good job!

[mommak]

Thank you. After two days of heavy playing and swimming in the pool, my FC dropped to 5.0, pH level is at 7.4. I have not needed to add any bleach to the pool for over 1 1/2 weeks. Today will be another day of lot's of pool usage. I am sure that tonight I may finally need to add bleach. My pool has been a beautiful crystal clear. So clear that my youngest children said "it looks like the water in the Bahamas" Now that is definitely a compliment!!!!!

[Watermom]

I can't believe with a CYA of 50, you haven't had to add bleach in over 1-1/2 weeks? How high did you take the chlorine when you last added bleach?

[mommak]

The highest that my FC reached was 15, it has taken that long for the FC to finally lower.Last night when I tested,my FC was 3, so I added bleach.

[Watermom]

OK. I had forgotten that your chlorine was that high. (I actually didn't forget ----- it's just that there are too many pools that we help with that they kinda run together! )