CO2 imput into grow beds?
Okay, I have heard alot about adding into small-scale, sealed greenhouses. Understanding that H20 and C02 are used in the production of sugars in plants, I am wondering if it can be directly added into the water in flooded grow-beds. I know this will create a rise in pH, but is it an effective means by which to increase CO2 availability to the plants? Is it even really necessary? The plants are located in a large, ventilated greenhouse.