There are several methods... From my experience... I have tried the "Big Dripper" and the nozzles it came with clogged up after a week, and I used purified water! Then I bought some cheap nozzles at home depot and poked a 3/16" hole in the bottom of the cup and attached the nozzle directly and it works perfectly! I don't even use a hose I just let it drip directly from the nozzle through the mesh and onto some leaves. Also, a neat trick I was told by a forum member was to put ice cubes on the top of your cage... I was a little skeptical at first, but it does work. Mine will go over and start drinking it as it drips.