I just got a new liner too..mid May. Converted from Bromine to Chlorine, and was researching which chlorinator I was going to buy when I came upon an old tread on the site, from 2010, that discussed using chlorine in a pool that had a bromine bank. The discussion lead to CYA Cyanuric Acid. I did some more digging on TFP and learned more. I had never heard of it before but wanted to just to ignore it, and continue on my search for a chlorinator.
Went to my local pool store, and was checking out the $120 units, when a young associate came up and started chatting me up. I told him I was converting from Bromine to Chlorine, and he walked me through the various devices from floaters to SWG, from$15 to $1500. He seemed very knowledgeable. I then asked him about the build up of CYA, and how that effected the amount of chlorine I had to use, and if there became too much CYA in the pool.
Now the next part of the story ,it might freak some people out on this site, but the kid actually told me that CYA would increase if I used Triclor pucks, and that if it got too high the chlorine would stop working, and that the only way to get rid of CYA is to drain the pool and refill with water....I kid you not...and he said "in your case you should just use straight bleach, bring you conditioner up to 30 ppm, and use liquid bleach as your sanitizer". He gave me his card, told me to call him if I had anymore questions and sent me on my why...without selling me anything. True story. So in my case I got great advice from my local pool store.
That is when I did a deep dive into this site to learn all I could. I am in week three of circulating the pool, and my water is balanced with a CSI of - .07. It is crystal clear. I am adding about 750ml of bleach a day to keep my FC in range, I haven't had to shock the pool once because I now know when I have to do it. It takes me about 5 minutes a day to check the water and add chlorine. took me longer to check and fill my bromine feeder. And I have only used $13 worth of bleach, and $5 worth of Muriatic Acid. Since I had no bad habits to break in regards to using chlorine, I can say this method works when followed. And from what I have read from others that don't, consistent problems.
New water...fresh start.