Suction Cup & Silicone Plug for Cal Aqua Labs - Double Check

Cal Aqua Labs' Double Check series is the only all-glass dual-compartment CO2 checker that allows the user to accurately compare the CO2 level in your aquarium side-by-side against a standard...

CAL AQUA's Double Counter functions as both a normal-flow and high-flow bubble counter in one elegant design. Normal-Flow Configuration: For small to medium sized aquariums where CO2 bubble rates are...

The Double Counter ER functions exactly the same as the original Double Counter but has an external port for quick and easy filling. Over time, water level inside bubble counters will evaporate due...

CAL AQUA LABS has revolutionized CO2 diffusion in the planted aquarium and has set the highest standards in design and quality with their Inline CO2 Diffuser. The Inline CO2 Diffuser is designed to...

CAL AQUA LAB's Nano drop checker is designed specifically small or nano planted aquariums. Measuring approximately 3 x 3 cm, it is small enough to appear unobtrusive, yet large enough to provide a...