I'm having trouble getting chlorine to stick around. I have an 18,311 gal vinyl inground. I have been using the dichlor/ trichlor tablets in a feeder for the last several years (before I found you guys!!)and created a huge CYA number, I have drained close to 1/2 the pool 3 times and have gotten it down to apr. 130ish. I have decided to live with it for a while. Been using Cal Hypo daily and it goes up but sun sucks it out thru the day. Being a pain to pre-mix so the powder doesn't go to bottom ans stain liner I recieved some good advice on switching over to bleach. Added bleach late evening yesterday and will check tonight. My numbers before I added were maybe 0 to a little over FC, 7.4 PH, 100 TA, apr. 130ish on CYA. I have standard OTO drop kit that only test TC but compare with some strips that check FC. According to pool math I needed 380 oz or so of 6% to get to the min of 10 on FC. I added 242oz of 8.25% bleach an I'll check again this afternoon. I have been a liitle concerned that I'm reading I need 10-16 on FC due to CYA being high when I also see out there that you should not swim if your level is over 5??? I'm confused??
Also, will it ever level out where I don't have to add bleach everyday. I was used to just setting the feeder and not having to add everyday.
Thanks in advance!!