One month old pool- switching from tablets to liquid chlorine. HELP!


Mar 2, 2019
Cypress TX
I just read this t=forum for hours and realize what our PB told is to do is basically all wrong. I am ready to switch to liquid chlorine. Just checked the levels and CL is at 0.3 and PH is at 7.5. How much chlorine should I add? Our pool is somewhere between 20,000 and 21,000 gallons.
Thank you very much in advance. Could use all the help and guidance I can get.