The TDS meter (Total Dissolved Solids meter) from Chihiros measures the amount of dissolved solids (e.g. minerals, salts, metals) contained in the water via the electrical conductivity and the water temperature. The substances in the aquarium water accumulate over a period of time depending on various factors, e.g. the nutrient consumption of water plants as well as water pollution through fish waste. A high electrical conductivity, therefore, indicates that either many unwanted and unused nutrients are dissolved or that toxic substances from water pollution are present. A quick water change is necessary, followed by a detailed analysis of the water’s parameters.
In addition, a quickly lowering electrical conductivity indicates a lack of nutrients. Especially in those cases, the TDS-meter is a very helpful tool to monitor the overall condition of the aquarium.
For operation, the TDS-meter requires two 1.5 V Button cells. These are not included.