Simply inject 1cc of co2 indicator solution into the cap of co2 indicatorNot necessary to change solution every time a maintenance is done to the aquariumAdding aquarium water is not necessary
Simply inject 1cc of co2 indicator solution into the cap of co2 indicator. Adding aquarium water is not necessary. Recommended to be changed only once a month. Not necessary to change solution every time a maintenance is done to the aquarium.
Brand: Gulfstream Tropical, Model: 691