I purchased a FAS-DPD test kit (Taylor) last summer and used it through the warm weather and things were fine. For the winter, I've been doing quick tests with strips. So today I decided I should use the better kit and test everything. When I did the DPD test for Cholrine, the sample remained clear. I originally used 2 scoops as directed, and i added 3 more scoops of the DPD reagent and still the sample was clear. Ok, so maybe there is NO chlorine in the pool? Anyway, I moved on to the Ph test, and it shows just a tinge of color, around 6.6 ph. That doesn't really seem right. For the 15 years I've had this pool, I often add acid to lower ph, but it's never been low like this before, and I haven't added acid in 3 or 4 months.
So, I tested with the test strip, and it did show no chlorine. But it showed high PH around 8.0, which is what I would have expected given I haven't added acid for a while. The test strips are not as accurate for sure as the FAS-DPD kit, but the results have generally been close. So I'm looking for the reason for these results. As I said, I purchased the Taylor kit last spring, and it is not expired, and neither are the strips. So could it be water temp? I did have a bit of algae (even though the water temp is 48 I had a bit of an algae bloom on the steps close to the surface, where I guess the sunlight heated the step).
Steve T
So, I tested with the test strip, and it did show no chlorine. But it showed high PH around 8.0, which is what I would have expected given I haven't added acid for a while. The test strips are not as accurate for sure as the FAS-DPD kit, but the results have generally been close. So I'm looking for the reason for these results. As I said, I purchased the Taylor kit last spring, and it is not expired, and neither are the strips. So could it be water temp? I did have a bit of algae (even though the water temp is 48 I had a bit of an algae bloom on the steps close to the surface, where I guess the sunlight heated the step).
Steve T