Raise pH by 100% (pH is measured on a logarithmic scale, so for example a pH of 7 rising to 8 is a 100% increase)
One package of stones are intended to be immersed in approximately 8-9 liters of water, perfect for a Big or Royal Berkey. If using in a Travel Berkey, immerse about half of one box. If using in an Imperial or Crown Berkey, buy 2 boxes.
Turn your Berkey Water Filter into an extremely economical alkaline water filter