Seachem Laboratories Glass Bubble Counter, Clear, 17 mm

When you are running CO2 on a planted tank, knowing your injection rate matters, and the Seachem Laboratories Glass Bubble Counter makes that rate visible. This is the clear 17 mm version, a simple and elegant tool for monitoring the rate of CO2 injection in planted aquaria. It is the kind of small, considered piece that helps you stay in control of your CO2 without cluttering the scene, and it works quietly alongside the rest of your gear.

• It is a dedicated bubble counter, giving you a clear way to track how fast CO2 is going into the tank.
• It is placed in the CO2 gas line, so it reads your injection at the source rather than guessing from the water.
• Sitting in the line keeps your equipment footprint inside the plumbing, which minimizes visibility of CO2 gear in the aquascape.
• That lower-profile placement lets your plants and layout stay the focus instead of the hardware on display.
• Even tucked into the line, it still allows you to easily check CO2 output at any time you choose.
• You can glance at the bubbles whenever you want a quick read on what your system is doing.
• Seachem describes it as both simple and elegant, a tool meant to do one job cleanly and well.
• This is the clear finish, keeping it understated wherever you decide to mount it along the line.
• The 17 mm size makes it a compact addition to your CO2 line rather than a bulky inline fixture.
• It ships as a single bubble counter, one ready-to-install unit per pack.

For the planted-tank hobbyist who wants to fine-tune CO2 instead of running it blind, the clear 17 mm Glass Bubble Counter is an easy win. Set it into your gas line, watch the bubbles, and adjust your injection with real feedback right in front of you. It keeps the working parts of your CO2 system mostly out of sight while still letting you check output the moment you want to. That blend of clean looks and genuine usefulness is exactly what makes it a steady fixture in a well-kept planted aquarium.