Moved post to create your own thread. Always start your own thread rather than hijack another member's thread. Butterfly
Not sure if this should be a new topic, but my situation does seem similar.
This is my first year opening the pool (new last year). I'm not ready to open yet, but I did pull off a corner of the cover to get a look and try to get some chemical readings. Water seemed to be slightly green, but I could still see the bottom easily. Unfortunately, my cover does not fit tightly and I do have a bunch of leaves on the bottom. My biggest concern is my CYA level. I opened my brand new TFTestKit and followed the instructions to retrieve a sample of water. I placed the sample on the kitchen counter, so it would warm up before adding the reagent. I added the reagent, mixed, waited, shook and then poured into the view tube. I poured the entire container into the tube and could still see the dot clearly. Last year, the PB started it up and came back out a few weeks later for follow-up. I asked about the CYA level. He checked, thought it was somewhat low and added some stabilizer. Based on what he said, I figured the new level should be between 60 and 80. I did not purchase a CYA test kit last year, but, following directions from here, the pool was clear the entire summer without any issues.
As stated, my biggest question is my CYA level. I thought that CYA never disappeared (without draining and refilling). I did have to drain the pool twice over the winter, due to rains, but that would not amount to more than 5% of the volume. Does it make sense that CYA would test at 0? If so, where did it go?
I also tested the pH and Cl levels at > 8.2 and about 1.0 respectively. I'm not going to worry about the pH until I get the pool open and operational. I just want to ensure the Cl levels are high enough that I won't open to a green swamp.