Nutrafin Wide Range pH Reagent Refill, 10 mL (0.3 fl oz)

Nutrafin Wide Range pH (4.5-9.0) Reagent Refill, 10 mL (0.3 fl oz), use with High Range pH Test Kit.

It is important to check the pH regularly, as it can affect the well-being and health of the fish directly.
Size: 10 ml (0.3 fl oz).,