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FC = 12.0 CC = 0 CH = 250 TA = 60 PH = ???? CYA = 82 Salt = 400 Bor = 16 I add chlorine via trichlor tablets (in the past), now because of high CYA will be adding bleach as needed I add muriatic acid as needed I add borates in the form of borax occasionally

I have begun testing my small fountain (100 gallons). I have been observing a strange phenomenon when testing PH. For example when I tested today after first putting in the reagent, I got a reading of 7.0, after 1 minute the reading was 7.4, then 7.6 after 2 minutes, and at 4 minutes, it was...

Just curious, why should I increase CYA? I thought 30-50 was the preferable range. BTW, I don't have an SWG, I just have salt because I like the feel.

I have not filled my pool since the original startup after plastering. My fill water has a CH of 175.

I had my pool re-plastered with PebbleFina Feb. 2018. After the plastering in Feb. I had a CH reading of 450 (TF100 kit). In March it went up to 475 and now in April it is 500. For completeness all the readings today are: FC=3.0 CC<.5 CH=500 TA=90 PH=7.6 CYA=35 salt=1260 borates=15 CSI=.13...

Every weekend I do a full TF100 test on my pool water. Then I plug the numbers into PoolMath. I then adjust the PH number until a get a CSI of 0. I use the adjusted PH number as my target PH for that week. Is this a good way to do it?

I have found an old taylor K-2005 test kit. In that kit are reagents for base demand and acid demand. Evidently these tests tell you how much acid or base to add to reach a given PH in your pool. I have never used these tests, I just guestimate the amount of acid or base to add, and then test...

Re: 27 year old pebbletec pool... replace? I have not done anything to the "stains". Those white areas seem to be where the pebbles have come off.

27 year old pebbletec pool... replace? I have a 27 yr. old pebbletec pool that came with my house, I know very little about the longevity of pebbletec. A pool plasterer saw my pool and said it needs to be replaced and he is willing to do it. I would like some less biased opinions. Here are...

I will try to post some pictures

what would be the approximate cost of replacing the pebbletec (12,500 gallon pool)?

I have some severe cracking in my pool deck over the spillway from my spa to pool, I had a guy out today to give me an estimate on replacing the cracked deck (aggregate). He also looked at my pool and said that the pebbletec needs to be replaced, so he is going to give me an estimate on both...

I partially drained my pool in order to lower CYA and CH. After refilling and circulating I tested using both the TF-100 and the ColorQ 7 Pro and got the following: TF-100 ColorQ FC 10 6.59 TC 10 6.59 TA...

What is the best way to test?

I have recently read about people adding salt to a non-SWG pool because they like the feel of the water. Does anyone know about this? And can it upset the balance of the pool?

Thanks for the tip, I will do that.

Will do. Thanks

Yes, I have read all of those and they are quite informative.

Yes, I have done both of these many times, I was just hoping you were referring to some drop PH test that I had never heard of, which as far as I know doesn't exist.

Good idea, I have just added an oral syringe to my kit. - - - Updated - - - what is a 50-60 CYA?

I don't believe the TF-100 has this test, what do you use?

I just received my TF-100 and performed my first tests this morning. It's a very nice kit overall. I just have a couple of minor issues. The 8 oz. bottle of R-0013 (CYA reagent) has one of those caps that you press on one side and it opens on the other side. That cap makes it difficult to...