Tetra General Hardness Test Kit - T614 UV and a robust construction of

and a robust construction of 2mm thick shock-resistant glass

1 meq/L and demonstrating a very sharp colour change

Combines multiple supplements into a single solution

Combining sleek aesthetics with functionality

Encourages complete nitrate reduction to nitrogen gas

Tetra General Hardness Test Kit - T614 UV and a robust construction ofTetraTest General Hardness (GH) Test Kit The TetraTest General Hardness Test Kit is a simple and accurate way to measure the mineral content of your aquarium or pond water. GH (General Hardness) is an essential indicator of water quality, as it reflects the levels of calcium and magnesium, which are vital for the health of fish, plants, and beneficial bacteria. Regular testing ensures a stable environment, especially in soft water areas where mineral