About This

• ¡ï This is a very nice tiny Co2 Glass Monitor. Made of quality glass.
• ¡ï Specially for pressurized CO2 system plants for tank.
• ¡ï Used to test and monitor the concentrate of the aquarium water plants fish for tank.
• ¡ï No suction cups required. Simply hang it on the edge of your planted aquarium.
• ¡ï Easy maintenance, since it is not under water, it won'for t grow algae on the glass.