I have maintained my pool for the past 5 summers. The last 2 summers have been AWFUL! Unstable FC & TC, high TA, low pH and rising CH. The Pool Store's advice has helped only to empty my wallet. Add muradic acid ($) then ph+ (more $). This did not solve anything, since both chemicals equally affect both values! They also did not tell me that the Calcuim Hypochlorite Chlorine they kept selling me causes the CH levels to increase! I did not know there were different types of chlorine until recently. I guess I was blindly lucky the first few years.
Luckily, I found your forum and after reading up in Pool School and getting a K-2006 test kit, I decided to go BBB.
I have some questions but 1st my equipment and current chemical info.
Pool = IG Plaster 25,000 Gallons with DE Filter 120GPM & 1 HP Pump.
FC = 0.5
TC = 1
pH = 7.0
Alk = 100
CH = 350
CY = 30
I want to raise the Free Chlorine to 3+ and the pH to 7.5 without increasing the Total Alkalinity. Do I just add the Pool Calculator's recommened amount 130oz of 6% bleach to the skimmer? Will this also make the pH go up since bleach is a strong base or do I also need to add borax as well? If I need to add borax, do I dulute it in a bucket 1st then pour in the skimmer?
My Calcuim Hardness was up to 490 2 weeks ago and I drained 30% of the pool water and refilled. I know the CH is on the highest end. Please do not tell me to drain more water; the water restrictions in CO is making water too much $$.
Thank you for your help!