ISTA CO2 Bubble Counter + Check Valve - aquarium tank water plants 4/6mm tube

Item is easy to install. The hose mechanism is quite simple (similar to canister filters), it´s perfect to use with the MAX MIX CO2 REACTOR, because it allows to control the CO2 flow, once it´s impossible to control the CO2 flow using only the reactor.

●Two functions as CO2 bubble counter & check valve in one unit.
●Apply to both internal or external use.