Seachem Laboratories Glass pH Checker 25 mm

Keeping a planted aquarium balanced means watching what your CO2 is doing to the water, and the Seachem Laboratories Glass pH Checker gives you an at-a-glance way to do it. This is the 25 mm glass version, a single pH monitor that comes with its own pH sensitive indicator solution. Once it is in place, it quietly reports on the chemistry of your tank without batteries, probes, or fuss.

• It is a glass pH monitor, so it sits in the aquarium as a tidy, see-through piece rather than another gadget hanging off the rim.
• It comes with pH sensitive indicator solution included, meaning you have what you need to start reading right away.
• When submerged in water, the indicator solution changes color according to changes in the pH of the aquarium.
• Those pH shifts are tied to CO2 gas, so the color gives you a window into how much CO2 your planted tank is carrying.
• That makes monitoring CO2 concentrations in planted aquaria easy, turning an invisible variable into something you can simply look at.
• It also makes keeping an eye on pH level straightforward, so you are not guessing at the balance of your water.
• The glass build keeps it visually quiet, a fit for keepers who care about how their aquascape looks.
• This is the 25 mm size, a compact checker suited to sitting inside the display.
• It works as a steady visual reference you can check any time you walk past the tank.
• It ships as a single checker, one ready-to-use unit per pack.

For the planted-tank keeper running CO2 injection, the 25 mm Glass pH Checker takes the guesswork out of daily monitoring. Instead of wondering whether your gas is dialed in, you glance at the color and read the story your water is telling. It is a simple, low-maintenance tool that helps you keep CO2 concentrations and pH where you want them, so your plants and the rest of the tank can settle into a stable rhythm. Place it where you will see it often, and let the indicator solution keep you informed.