You may want to collect rain water in used 55-gallon plastic drums, for the high water quality and lower water bill. It is also good to maintain a water temperature of about 72 degrees F, to increase solubility. The water will tend to be cooler than the air, because the evaporated water will transport the heat. If you use only one method, the liquid carbon is preferred. I said OK, but that I needed to update them.
Scholastics tend to view knowledge as almost static, and focus on minor improvements at the margin.
Quantum leaps forward are usually achieved by outsiders and entrepreneurs. The benefits of the liquid carbon method for space exploration are staggering. If the CO2 is raised to optimum levels for the plants, it would be too high for the humans. I suspect that the humans in a space station would not be able to exhale enough CO2 to support the amount of plant material necessary to provide the food. So I would advise future farmers in the sky to check out the liquid carbon method.