Cal Aqua Labs

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 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...

CAL AQUA LAB's Oracle is designed with elegance and exceptional functionality. Unique to the Oracle is a small white column at the center of the solution chamber. The white background of this column...

Cal Aqua Labs' PEARL is a dual-compartment CO2 checker that allows the user to accurately compare the CO2 level in your aquarium side-by-side against a standard reference. The unique space-saving...

Cal Aqua Labs' CLIP is the first CO2 checker that can be mounted or hung on all four sides of the aquarium, allowing greater flexibility in the device's placement within the aquarium. It's low visual...

Cal Aqua Labs' Clip nano is designed specifically for hanging on the aquarium rim. It's low visual profile minimizes distraction from your aquascape. Provides unsurpassed clarity and minimizes the...

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...

60 ml. Reference refill solution for use with CAL AQUA LABS's dual chamber CO2 checkers. The reference solution is calibrated to 30 ppm CO2. Easy to use, no mixing required. Simply open cap and fill...

Designed for aquariums approximately 15 - 25 cm (6 - 10 in) in height which use a canister filter with 1/2" diameter tubing. The Influx pipe carries water from the aquarium down to the canister...

With a total length of approximately 35cm, the Influx X3 is one of the longest glass inflow pipes on the market. It has a 17 mm tube diameter for 5/8" (16mm ID) tubing and holds two suction cups for...

Designed for aquariums approximately 15 - 25 cm (6 - 10 in) in height which use a canister filter with 1/2" diameter tubing. The outflow has an upward funnel shape which gently releases water into...

Designed for aquariums approximately 20 gallons and larger which use a canister filter with 1/2" diameter tubing. The outflow has an upward funnel shape which gently releases water into your aquarium...

Designed for aquariums approximately 30 gallons and larger which use a canister filter with 5/8" diameter tubing. The width between the arch is approximately 6 cm.The outflow has an upward funnel...

One replacement suction cup and silicone plug for Cal Aqua Labs Double Check CO2 Drop Checker

One replacement suction cup and silicone plug for Cal Aqua Labs Oracle CO2 Drop Checker

One replacement suction cup and silicone plug for Cal Aqua Labs Pearl CO2 Drop Checker

Pack of 2 replacement suction cups for all Cal Aqua Labs drop checkers and filter pipes.

Substrate enhancer for planted aquariums. Multi-R supplies the substrate with slow-releasing micronutrients and bioavailable iron using a unique extended-release technology. This helps maintain the...

Substrate nutrition and clarifier for planted aquariums. Substrex is a double-action substrate additive that provides long-term nutrients to the substrate and reduces clouding of the water...