Yea thats the vid. I really dont think it would be particularly effective the ppm would be low, know where near as effective as co2 canister.

I currently use co2 tablets. but my opinion of co2; you can grow massive buds by optimizing your grow room with out co2. its easier and it helps u learn how to grow properly. loads of us dont use co2 and we get great yields. you can bet any n00b who used it would still get less than some1 who new what they were doing and not using it.