So I've been reading up on tanks with live plants, and many people inject CO2. As you all know, fish also need Oxygen in the water. So today, I was thinking about fish as I almost always do now, and I decided I was thirsty, so I got a sweet tea from McDonald's. While sipping through my straw, an idea came to me.
You could take a drinking straw and blow bubbles into your tank. This would put CO2 and O2 into the water. I also thought that you might contaminate the water with bacteria in your mouth via saliva, but I am sure there are ways to prevent contamination.
Please note, that this is just a random thought. I do not think this is practical, but I thought people on here would get a nice chuckle out of it like I did. Please share any thoughts, comments, suggestions, and improvements bellow.