If you take out the water pump and add an air pump with an airstone is what he means.

And yes you are right, the pump is very important. Water pump for other types of hydro and the air pump for DWC type, which is what he is suggesting you turn your setup into.
GetThisOrDie Reviewed by GetThisOrDie on . Bucket Hydroponic idea I have this idea for a hydro set up that might work. Let me know what you guys think about this. You can see whats going on in the picture. The plant sits at the top and the mesh thing stops the roots from going down in the nutrient water. And the pump just does it's job pumping the water to the plant. http://img18.imageshack.us/img18/3638/buckethyd.png Rating: 5