API Ammonia Test Kit Fresh & Salt Water, Ammonia Test Kit FW & SW Dog Holiday Charms Fits standard doors

Fits standard doors

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The middle (black) post on the collar senses the vibration from the dog's vocal cords

These strips can be dipped directly into your aquarium

1" ID (inside diameter) tubing

API Ammonia Test Kit Fresh & Salt Water, Ammonia Test Kit FW & SW Dog Holiday Charms Fits standard doorsThe API Ammonia Test Kit measures ammonia levels in both fresh and saltwater aquariums. Ammonia, the number one killer of tropical fish, is continually produced in the aquarium from fish waste, decomposing plants and uneaten fish food. Ammonia NH3 NH4+ test kit Monitors toxic ammonia to help prevent fish loss For fresh and saltwater aquariums Ammonia in the aquarium will damage delicate gill membranes and prevent fish from carrying on normal