the main problem i have with this method of making extra co2 is 1once you wet the leaves they wont be able to breath anything in. 2 even if the wet leaf could breath once they use up that small amount of co2 then what which is seconds, that's equal to you pouring a cup of liquid o2 down in to your lungs IF IT worked you'll only be able to breath for a few more seconds then thats it if it worked
what you need is a steady supply of co2
freash air
burning hydrocarbon
tanked co2
and even small animal liveng in you grow room
i personaly dont think that the sugar yeast method or the mushroom method actural work WELL! the court is still out on them