The Tetra Oxygen Test Kit is a reliable means of testing for oxygen in fresh and saltwater aquariums or ponds. Tests oxygen rates from 2-14 ppm. Performs 30 tests.
Each kit contains the equipment necessary to perform definitive tests. Includes testing agents, vials, color scales, instructions and recommendations.

Price: $12.49

All maintenance in the pond should be done on a water temperature basis, not the calendar. Hang the thermometer in your skimmer for easy access or just attach to a rock. Tetra Teathered Thermometer

Price: $14.99