Ocean acidification--the ongoing increase in dissolved carbon dioxide (pCO2 ) and decreased pH in seawater--presents a burgeoning challenge for aquaculture of potentially-sensitive animals, such as molluscs, crustaceans, and even fish. Hatcheries offer a relatively-controlled environment in which to adjust conditions to be more optimal for survival, growth, and calcification, especially for the most vulnerable early life stages. Yet, it is challenging to measure incoming seawater conditions well enough to understand when and to what degree stressful conditions are present. The pCO2 to Go is a hand-held, low-cost analyzer that can be used to measure the amount of dissolved CO2 in seawater. Using regional knowledge of alkalinity characteristics, which can be developed in partnership with local oceanographers, an included manipulation application allows hatchery staff to calculate how much buffering solution to add to tanks to create optimal conditions for organismal calcification. The buffering solution recipe is included with the analyzer, and it is relatively easy and inexpensive to create. Additionally, aquaculturists can bring the pCO2 to Go with them to the field to measure the conditions in understudied habitats, such as clam gardens, and better understand what their species contend with in the natural environment. The analyzer, application, and methodology are currently being tested at the Alutiiq Pride Marine Institute, ensuring this approach will provide an easy-to-use system when made available to the industry. Access to and training with this analyzer system will empower hatcheries around the globe that have many factors to consider during production--temperature, food availability, oxygen--to more easily monitor another important parameter.