SEACHEM GLASS BUBBLE COUNTER 17MM DIAMETER (SC-3158)

The Bubble Counter is a simple and elegant tool for monitoring the rate of CO2 injection in planted aquaria. This bubble counter is placed in the CO2 gas line, which minimizes visibility of CO2 equipment in the aquascape while still allowing the hobbyist to easily check CO2 output at any time.

Compatible with 6 mm (1/4") - Standard Airline Tubing.