This system can be programmed to deliver a specific dosage of CO2 at times you control. LED alarm system alertd you when errors are detected, as well as a built-in pH reader, since pH is closely related to your CO2 level. A 9v battery, calibration solution and instruction manual are included. Accurate to + 0.2 pH.
Specifications Aquarium Type FRESH AND SALT WATER
Warranty There is a 2 year warranty on unit, 6 months warranty on probe. For any warranty issues please contact the manufacturer at: 877-283-7837