A very useful thing to determine the acidity. Is subtracted from: before you start cleaning activities (by glitov, candida and other pathogenic flory- fauna), you must check the level of kisotnosti. If it is too high, start with soft, gentle and equipment (fiber, chlorophyll, clay, minerals, electrolytes), in order to avoid complications. and subsequently monitor: as stabilizing alkaline balance added increasingly powerful means. Katushechka small, very comfortable, long enough tape.