EFFICIENT APPARATUS AND METHOD FOR SUPPLYING CARBON DIOXIDE DISSOLVED WATER AND GROWING WATER WITH DISSOLVED CARBON DIOXIDE, WHICH TO BE APPLIED TO PLANT AND ALGA

PROBLEM TO BE SOLVED: To provide an efficient apparatus and method for supplying carbon dioxide dissolved water and growing water with dissolved carbon dioxide, which are to be applied to plants in greenhouse cultivation and a plant factory, and algae of a bioreactor.SOLUTION: The apparatus and method for supplying carbon dioxide dissolved water or growing water with dissolved carbon dioxide use a pump which serve both for supply solution circulation and solution sending, and attached with a switching cock for solution sending to the outside, and an aspirator or a microbubble generating nozzle, in a carbon dioxide dissolving tank with a sealable cover or a supply cock, supply carbon dioxide into the carbon dioxide dissolving tank followed by circulating carbon dioxide and water or growing water, detect the saturated state of carbon dioxide in the carbon dioxide dissolving tank with a carbon dioxide variable flow meter or a bubble counter, and stop carbon dioxide supply followed by switching the switching cock to a solution sending side so as to send solution to the outside.