Does aerated water have more benefits than normal RO water?

Hi Ja, there are studies that deal with this topic. Watering with sparkling water can significantly improve the growth and health of cannabis plants, especially when grown under powerful grow lights. Sparkling water increases the oxygen content, thus promoting root health and nutrient uptake. It's just important to monitor and adjust the pH level, as it probably isn't ideal. Another point will likely be the costs, as it will surely be a bit more expensive than tap or rainwater. And you should pay attention to the mineral content; when you add nutrients, you'll probably need to adjust the dosage and not use the same as with the other types of water. But it would definitely be interesting to start a comparison grow.