Re: slimy, gelatinous strings of goo ruin a good dip.........
Order a K-2006, it has several improvements over the HTH test kit such as a higher precision pH test, the FAS-DPD chlorine test, a test for calcium hardness instead of total hardness (total hardness is a useless test for pools)
GET YOUR pH UP by adding borax. Low pH will damage your liner and equipment!!!!!!
While you are at it get a tube of LaMotte borate test strips so you can test your borate level. I suspect that you will be in the 30 to 50 ppm range once you get your pH up and that would be good to know. Having 30-50 ppm borate in your water has a lot of advantages, as PoolDoc said before. You will probably have to order the strips online also, since your pool store does not want you to do testing yourself because they know that if you start taking control of your water and have accurate test results they will lose money. I have worked in pool stores and know this to be fact. We were told NOT to sell test kits but to have them come in for testing every week since we could sell them something every time they came in!
The other possiblility is that your pH reagent is bad and giving you a false reading, another reason to get a K-2006 fast. However, I would not bank on that and would keep adding the borax. One easy way to tell is to add a tiny pinch of borax to yor pool water sample in the pH comparator and see if the color changes to a high pH color.
Retired pool store and commercial pool maintenance guy.
Bookmarks