Juraperle pH Correction Media is widely used for pH balancing applications, especially for drinking water and private water supplies (such as boreholes, wells and springs). The media works by dosing Calcium carbonate into your water to increase its pH and is suitable for water with a pH of 7 or below. Over time the media slowly dissolves and requires topping up at regular intervals, and can come in cartridge form or is found inside of a water treatment system. This small 1kg bag allows for easy top ups, without having to buy in larger quantities.