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 observing the solution color in the checker; this contrast ensures accurate measurement of CO2 levels in the aquarium, at a glance.
Observing the solution color in a typical CO2 drop checker can be difficult if the checker is placed against a dark background or in front of plants. The background color(s) can interfere with an accurate judgment of the solution color. For this reason, the white center column of the "Oracle" was created, for definitive color contrast and color identification. For aquariums that do not require the additional contrast, the center insert can be carefully removed.
The "Oracle" is hand-crafted using only the highest quality, laboratory-grade, borosilicate glass for maximum strength, durability, and visual clarity. Each piece is unique.