As you can see in my signature my pool is brand new. It got finished 3 months ago and we have been swimming in it. I've been checking it with the test strips the pool company provided. they came and put a bunch of stuff in a couple weeks ago because it was included in the build price. After doing some reading I found out my CYA level was was off the chart on my test strip. My water has always been crystal clear but I'm just concerned for the safety of my family and friends as we have A LOT of swim parties. I brought it to Leslie's and they confirmed. I did a water exchange overnight and got my CYA down to 70. They then sold me a bunch of stuff because my chlorine level was too low. I realized after I added it all the stuff they gave me also contained CYA. So I did another water exchange and got it back down to 70 after it rising to 100. So I ordered a TF100 test kit and bought some liquid chlorine at home Depot and I'm going to start the trouble free pool method. As of today chlorine looks good according to my test strips and Leslie's. My test strips are showing my pH is low and Leslie's is telling me it is too high so here we go again. Once I get my test kit in I won't have to go there anymore for testing. Wish me luck.