API Nitrite Test Kit Freshwater Fish Detoxifies heavy metals found in

Detoxifies heavy metals found in tap water at typical levels

As it grows the yellow turns blue

This is one of the smallest of the clams

because should it inflate with air rather than water it could experience massive problems expelling the air

API Nitrite Test Kit Freshwater Fish Detoxifies heavy metals found inAPI Nitrite Test Kit API Nitrite Test Kit is a freshwater and saltwater liquid test kit that measures nitrite from 0 to 5 ppm, helping aquarists monitor cycling, biological filtration, and invisible water problems that can harm fish. API Nitrite Test Kit for Freshwater and Saltwater Aquarium Cycling Nitrite is produced as part of the aquarium nitrogen cycle and can rise when fish waste, uneaten food, or biological filter imbalance affects water