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Cal Aqua Labs Pearl Drop Checker

$49.99
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 design places the reference chamber right inside the the...
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Cal Aqua Labs Double Check Drop Checker

$47.99
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 reference. The top chamber holds the CO2 indicator solution,...
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Cal Aqua Labs Oracle Drop Checker

$47.99
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 facilitates precise color identification when...
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Cal Aqua Labs CLIP Drop Checker

$42.99
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 profile takes up very little space and minimizes...
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Cal Aqua Labs CLIP nano Drop Checker

$42.99
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 amount of equipment inside the aquarium, preventing...
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Cal Aqua Labs Nano Drop Checker

$37.99
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 clear and accurate reading. The CAL AQUA LAB's Nano is...
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Cal Aqua Labs Indicator Refill Solution 60 ml

$5.99
60 ml. Indicator refill solution for use with CAL AQUA LABS's CO2 checkers. It consists of a premade 4dKH solution containing the appropriate amount of indicator. Easy to use, no mixing required. Simply open cap and fill CO2 checker.
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