It works just like those old style spitting sprinklers with the spinning and everything. In the 6 ft. planter, I have a line of 3.

Each head has a knob on the side to adjust flow. I have mine set to half flow or less. At full flow they have about a 3.5 ft. diameter spray -- on my setup.

And speaking of my setup, here is the heart of the system - a five gallon bucket with a 330 GPH fountain pump. I went with a .5 in main line and of course, .25 in for the drip lines. That white thing hanging above is a programmable 14 setting timer with auto DST and battery backup for the clock.

And that's it. But why adapt it for a pump and bucket system? Well first, I don't have a hose spigot on my balcony(thought that will change soon). Second, I like to be able to have exact control over the amount of water I use. Third, it's easier to measure out and mix the ferts right in the bucket and easier to keep track of. And that's the last unless I think of something else later.

Happy Farming!!