My pool was installed Summer of 2014. We went with Bacquacil because that’s what the pool guy pushed. 1st and 2nd seasons were fine. No problems. 3rd season opened to white mold, took forever to clear up. 4th season same thing. Struggled with keeping it clear. Decided I wasn’t going to stick with Baquacil but was told you couldn’t just change over without a process. So I did not winterize as usual. When I took cover off it was not bad. So I started by getting the Taylor K 2006 test kit. I got some regular household bleach put about 3 gallons in the pool. Then I read where the ph needed to be between 7.2-7.4 before you start the bleach! Ok so I got some more bleach, tested for chlorine there was zip, ph was less than 7! I ordered some soda ash and the other chemicals it said I needed on this site. When they came in the next day I put 3 cups and 1 oz of the soda ash in pool and 4 gallons bleach. Checked it today and ph is perfect but still reading on chlorine is zip. When I add the bleach it does react and turns water green, but the next day it’s back to clear. What do I need to do? 30 ft above ground pool with vinyl liner and Hayward sand filter and one speed pump. I have read and read and read and I’m still confused.