Cal Aqua Labs has introduced another new drop checker. This particular drop checker is available with or without a suction pad. The Cal Aqua Labs Clip drop checker is the most versatile drop checker on the planet when it comes to placement in the planted aquarium environment.
The white background the Cal Aqua Labs Clip Drop Checker has makes reading the color changes a breeze from a distance.
Here you can see the many ways in which you can use the Cal Aqua labs Clip Drop Checker
GLA Planted Tank Blog 