No, I am sorry I worded it like I meant spray it on.. just put the listed amounts into a 2 liter, and place it in your grow room, or make a few of them.. can't hurt to have more. You'll see little bubbles rising out of the concoction once its all mixed up. That's co2. Check it regularly, and when it stops bubbling, add another 2 cups of sugar. This will give you a constant (although unmeasurable) flow of co2. But remember co2 is lighter then air thereore the top of the bottle MUST be at a higher point then the plants.. or else they will not uptake any co2.

Cheers