I am so sorry that after you posted the history, nobody got back with you. If that happens again and you haven't received any replies after 24 hours, please bump your thread back up so it gets noticed.
Right now, we have SO many new posters on here and thus SO many threads and various problems that it is easy for a thread to accidentally be overlooked. So, again, we are sorry.
Glad you got your kit. That is good news. However, why don't you try the chlorine test again. It is unlikely that your CC is 26.
After you get new chlorine numbers, please repost. The new kit is going to make this process a lot easier. You have to slam this pool with bleach. Hard and often. As often as you can, test the water, and each time add enough bleach to get back to a cl level of 20 ppm. There is no such thing as testing or dosing it with bleach too often. Really. The more often you can do it the faster this is gonna go. If it were my pool and I had been struggling with it for as long as you have I think I'd be testing it before work, come home at lunch and test if I could, as soon as I got home from work, a couple hours later and then again before bedtime. If you have somebody who can do it mid-morning and mid-afternoon for you, even better. Don't give that chlorine level a chance to drop. Sustained high cl readings are all that is going to work for your pool. And, run the pump 24/7 right now. Watch your filter pressure.
PH of 7.2 is ok. Actually, while fighting algae, chlorine seems to work best when the pH is a little on the low side --- but just don't let it drop below 7.0.
I can't really advise you on the liner problem. Hopefully someone else will see this and chime in. Or you may want to start a new thread in the pool repair forum just to address that. I think you may get more views from some of our builder/installer type of members in that forum than you might here.
Bleach will not fade a liner anymore than any other type of chlorine will. Liquid chlorine sold at the pool store is typically 10 or 12% sodium hypochlorite while bleach is only 6%. Everyone assumes bleach will fade liners because they associate bleach with fading or bleaching clothes. It is no more likely to do so than any other form of chlorine.
Hope this helps some. I know you are frustrated, but don't give up. We will stick with you til you get this solved.
EDIT -- Just now re-read your post and noticed your sentence about your ill mother. Sometimes pools are not priorities. This may be one of those times. If you have to wait to focus on the pool at a later time, we'll still be here to help you.
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