TDS stands for  Total Dissolved Solids, or put simply the impurities dissolved in water. The larger the value of TDS, the higher the quantity of the content of impurities in the water. The TDS Meter Digital Water Quality Tester Fish Tank Test Pen allows you to test the water quality in your aquarium.

The general conversion ratio between GH and TDS value of water hardness:
0-89ppm (s), strong soft water 0-4dh;
90-159ppm, soft 5-8dh;
160-229ppm 9-12dh, moderately hard water;
230-339ppm, moderate hard 13-18dh;
340-534ppm, water 19-30dh;
More than 535ppm, strong hard water above 30dh.

Descriptive : Fish tank test pen TDS water quality detection mineral conductivity water quality detector household fish aquarium

Buy aquarium maintenance supplies in Kenya as well as water quality tester at Petsasa Kenya.