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Another thought...what is your current TDS?
When you measure FC and you find close to 0 ppm, then you add a tsp. of the 56, what is the ppm after 20 minutes of circulation?
After measuring that, if you were to add another tsp., what would the ppm be after another 20 min.?
WN,Just checked my CYA and realized that is the first time I've ever checked it. It tested out at 50 ppm......just right. My pH was a little high (7.8 or so) and my CC showed a shock was needed so I shocked with 3 tbsp of non-buffered MPS which will lower the pH a bit plus added 2 tsp. dichlor since I had soaked just before testing. Changed the filters and rinsed off the set just removed and I won't think of testing again until next weekend. And I probably won't test for CYA again for another 2.5 years.... 8-)
About 4 weeks or so....
What about between the k-2005 and k-2006?
nlittle..........the differences between the 05 and 06 kits are:The 06 has no bromine test and the chlorine is measured by adding chemicals till the water changes color and then mulitplying the drops by a factor. This allows you to measure higher values than the 05 kit due to the color limitation of the scale on the block that you compare the water color too. The disadvantage is the powder for the color change on the 06 kit is more expensive than the liquid ones for 05 kit. I thought I had ordered the 05 kit and instead 06 showed up. I then ordered just the color block from the 05 kit so now I have both in a way. The chemicals are the same except for chlorine measurement. Hope this helps.