Highly recommended for all aquaponic systems! API reagent for Ammonia bottle #1 and #2. Testing water parameters weekly helps prevent invisible water problems that can be harmful to fish. Fish continually release ammonia into the aquarium through their gills, urine and solid waste.
A must have for DO sensitive organisms or high bio-load environments. The HI 9147 Dissolved Oxygen Meter is designed for aquaculture applications. This unit is unique among DO meters as it is supplied with a galvanic probe.