Carbonated Water?!

[Achilles]

In a video that I watched, some guy sprayed carbonated water on his grow. I was wondering if any of you have done this and what you think of the idea.

[KingKahuuna]

As a spray for foilage, I wouldn't waste my time. Introducing Co2 into the same room with your babes is a different story, and needs tight control. some serious reading is instore for attempting that.
Adding that to your watering of the roots ? , well If CO2 were added to the water it would displace the oxygen from the solution with the water. This creates a bad environment for the roots, which are unable to absorb oxygen, which is needed for their survival. At the same time, anaerobic bacteria, which thrive in the absence of oxygen, begin to attack the roots, causing them to rot and releasing a telltale ammonia odor.
Using a product that increases the CO2 level in the root zone is a bad idea and can harm your plants. Hope this helps. Oh, and welcome to the site, read up on the couple of rules and then have a ball, you will love this place. Great folks here that are glad to help, and are nuts about pics. See you in the funny papers. LOL

smoke in peace
KingKahuuna