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The most recent tests with my swim spa shows the TA at 70 and pH at 7.2 I would like the pH a little higher (around 7.5-6) and have used borax to do so. It does raise the pH up to the level I am looking for, but then it drops back down (within a day or so) to 7.2 I understand that TA is a buffer...

Does anyone know of a test for Borates other that test strips? Based on recommendation I saw here, it seemed the best choice was the Lamotte test strips, which is what I am using. However, I have a very difficult time distinguishing the difference between 30-50-80 ppm. I can see the difference...

I tried testing my TA with the TF100 test kit today and had some questions. After adding the R-0007 and R-0008 the sample was green. Started adding drops of R-0009. There was not much color change (although some wavering between green and grey). On drop 10, the sample turned clear. I added one...

In doing a first test for CH using a TF100, I was getting a "fading endpoint". According to the extended instructions, this is caused by interfernce from metal ions in the water. I was able to complete the test by adding five drops of R-0012 at the beginning per the instructions (result was 90)...

I'm completing the SLAM process on my swim spa and wanted to use a more precise measurement for the CC and OCLT at the end to confirm everything is a clean as possible. I am using a TF100 test kit and have read the extended test kit instructions. I understand that you can increase the precision...

Do the figures on the Chlorine/CYA table apply to a hot tub/spa or do they just apply to swimming pools?

I developed some cloudy water and my CC was pretty high, so I thought I would try the SLAM process. Test results before: FC 3.38 TC 6.87 pH 7.2 CYA 74 (I know it is high and is from prior use of dichlor before I knew better) I applied 57 oz of 8.25% bleach per the Pool Calculator. This should...

We purchased a swim spa in October of last year. Up until the last couple of months, I knew little about spa maintenance and had just been following the dealer/installers instructions, with less than satisfactory results. In the last couple of months, I have been learning more about it (in...