Chihiros TDS pen

The TDS meter (Total Disolved 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. This conductivity value makes it possible to determine the time of the water change more precisely through regular measurements. 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 feces. 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.