TA and CH questions...

[Haley]

Hi all,

3rd day of new fill and looking pretty good on my numbers:

FC: 5.5
PH: 7.5 (ever so slightly increasing the last three days)
TA: 160 (fluctuates up and down the last 3 days, not by much)
CH: 120 (slowly declining by increments of 20 the last 3 days)
CYA: 35
CC: 0

I'm just tweaking and adjusting where needed, but I don't really know what to put in the Pool Calculator for my "goal" for TA and CH (or do I just use the Pool Calc's goal number?) When I read Pool School and the ABC's (for vinyl pools), TA and CH has such a large range of numbers. :uhh:

What am I really shooting for with TA and CH? For instance, it says for TA, "60-120, sometimes higher." How high is too high, because I'm at 160?

For CH, it says, "50-300." Right in the middle should be pretty good then, right?

Thanks for any input!

 

[linen]

Ignore CH since you have vinyl (actually very high CH values can cause clouding in any pool...but that is much higher >500 ppm).

Your TA is a little high, but I would let it come down naturally by lower ph down to 7.2 whenever it gets up to 7.8. Doing this will also slowly lower your TA.

 

[Haley]

Excellent, thank you. I saw in ABC's that there's no need for calcium in my vinyl pool. How often should I test for that since it's only of real concern when it gets too high? Once a week? Once every two weeks?

I'll do what you said; when my PH gets to 7.8, I'll lower it (via Pool Calculator's recommendations) and see it lower my TA as well. Awesome!

Thank you!!!!

 

[RobbieH]

I rarely test mine, and it's important for my pool to have it. Once a month maybe. Unless I have a leak, my CH stays steady, so I already know where it's going to be.

 

[linen]

I test my CH once a year...and my pool is relatively high (~400 ppm)

 

[RobbieH]

I keep getting a leak around the tile line under my diving board. I haven't checked mine since we fixed it at the beginning of the year and I got it all back in balance.

 

[topher]

is CH the blue capped bottles in my test kit? if so I havn't used them yet.

 

[Haley]

Wow, interesting! Thanks so much, Robbie and Linen!

Topher, if you have a Taylor kit, yes, the blue capped bottles are for testing the CH.

 

[linen]

is CH the blue capped bottles in my test kit? if so I havn't used them yet.

Not sure about blue capped, but one of the reagents is blue.

 

[topher]

is CH the blue capped bottles in my test kit? if so I havn't used them yet.

Not sure about blue capped, but one of the reagents is blue.

yes its a a taylor, and all three off em are blue was saying how much I test err.. dont test CH...