Nutrafin pH High Range Reagent Refill - 15 ml (0.5 fl oz)

Nutrafin pH High Range reagent refill, 15 mL (0.5 fl oz), for use with the Nutrafin pH High Range Test (7.4 - 8.6). pH levels should be monitored regularly as they have a direct effect on the well-being and health of the fish.