Well the first try on that homemade thing kind of left me alittle disapionted. Well, pratice makes perfect. I ended up making two, out of plastic milk jugs and I think I got it down where it does produce enough to do some good. Least my little test cup says so. It took 4 yeast packages, and 2 lbs of sugar to make a go of it. I have a pretty small grow box like 2 1/2x2 1/2 bye 4 foot tall. I have a 250 wat hps going in it, over 3 lovely little ladies that are in their like 4th week of flower. well good luck to yall and stay down, Wood