Reef aquariums are complex and often fragile ecosystems that thrive on stability to succeed. Daily fluctuations in carbon dioxide (CO2) levels in the air caused by normal breathing, pets, and cooking can all impact the aquarium’s pH. The higher the concentration of CO2 the skimmer pulls in, the greater the acidification of the water, often resulting in a drop in pH, unstable dKH, and significantly inhibited coral calcification. Overtime, this could lead to stressed corals’ and even the loss of that coral. For proper development, corals require a stable pH of 8.1-8.4.

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