1. You have to decide how you want to add the CYA. Do you want to add some separately and then go the rest of the way to 50 with your pucks and dichlor? Or do you just want to continue using dichlor and monitor til you get to 50 and not add CYA separately? Or ???

2. Yes. When you get some measurable CYA, it will help with chlorine being lost so fast to the sun.

3. I don't know about using the cellulose. Somebody else will have to answer that part of your question.

4. Phosphate remover is the newest thing pool stores are insisting people need. You don't. And, you don't need to test for phosphates in 99.99999% of pools.

5. Depends on what you decide about my response to #1 above.

6. It is normal for some of it not to dissolve. If your chlorine is super low or non-existent, that is why it isn't turning pink. You need to be taking your chlorine higher when you add it so that you never have the chlorine drop this low.


Regarding not being able to start a new thread, that shouldn't be. Are you sure about this? Once you are in the section of the forum where you want your post, you should be able to click on "start new thread" which will be near the upper left. Go to the practice forum near the bottom of the main page of the forum and practice starting a new thread there to see if you can make it work. For now, I'm going to just move this part of your thread into a separate one since we are now dealing with chemistry and not equipment.