waterbear 102 Posted November 9, 2020 Report Share Posted November 9, 2020 THE MAIN CAUSE OF pH RISE IN A POOL OR SPA IS OUTGASSING OF CO2. THE HIGHER THE TA (CARBONATION IN THE WATER), THE FASTER CO2 WILL OUTGAS AND THE FASTER THE pH WILL RISE. THE HIGHER THE AERATION OF THE WATER (OZONE SYSTEMS, SALT WATER SANITIZER SYSTEMS, AIR INJECTORS, AERATION FROM YOUR JETS, 24 HOUR CIRCULATION ON HIGH SPEED, ETC.) THE FASTER CO2 WILL OUTGAS AND THE FASTER THE pH WILL RISE. THE LOWER YOU PLACE THE pH THE FASTER IT WILL RISE (YOU ARE CONVERTING MORE BICARBONATE IONS, WHICH IS WHAT WE MEASURE AS TA, INTO CARBONIC ACID, ESSENTIALLY CO2 DISSOLVED IN THE WATER. 1 Quote Link to post Share on other sites
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