if the weed is burning, but your getting little smoke, or you don't feel high after a bowl then check your screens. If your screen or stem is blocked with ash or resin your weed will burn, but you won't get anything out of it. I recommend a clear bong, the hits are cleaner, smoother and you can see how much smoke your getting. Go to this website here www.smokingwithstyle.com it is like the weed smokers bible. If you still have questions well...ask them and I'll do my best. heh