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I have a newly re-plastered pool. I add 4.5 lbs or 72 ozs of CYA. The pool calculator with my given pool size shows that an addition of 68 oz required to bring CYA to 30ppm. I test CYA with Taylor kit and get something considerably under 30. Completely filling the vile past the 30 mark... or...

Since I am really tired of kneeling on concrete and reaching into the water a full arm length to get a water sample, I made a tool. Really simple (don't laugh) but after using it for a week I am loving it. Cut about 6 inches of 1 inch PVC and glued a cap on one end and then clamped (stainless...

Great forum! Thanks for the help!! I am hand dosing 10 % chlorine. Our pool is in the sun. I am confused as to why I want the CYA at 30 or above. If chlorine is more efficient with low CYA... it seems that keeping the CYA low at maybe 10 or 15 will use more chlorine due to sun but since it...

Hello All.. I am new and this is a first post for me. I have new plaster and am really trying to get the water right. I have taken water to the local pool store three times since filling last week. First trip the CY was 0.. great. New plaster seems correct. In a 17,000 gallon pool I added...