Our pond is 3 weeks old. all tests are "normal" such as 7.2ph, however the total Alkalinity test is 40ppm. OF course ideally this should be 120-180 for Koi. Everywhere I search, each time I read about adding bicarb soda to raise Alkalinity it indicates it will raise the ph. So what gives? If the ph is the key to perfect alkalinity, why confuse all the test kits with ppm Alkalinity readings? We would like to raise it from 40 to 120 but should we bother if this means it will screw up the ph and we chase out tail?