i never use a waterfall because i don't know how. i see it's hard to explain but help me get a mental pic. ok, this what i know, fill in the blanks
1. Get a 2 liter bottle
2. Fill with water
3. Drill hole the size small enough to place your finger on it
4. Get a bowl????
5. Where to put the dope???
6. Do the bowl or socket need a hole?
7. Drain the water from the hole in the bottle?
Some one please clue me in. If it save on the weed, I want to know!!!!