An earthbox is a self contained unit. EarthBox has all the information.

The water sits in the bottom of a reservoir and there are two bricks of mix in the back that wick water up in to the soil. I top feed with the nutrients, and then fill the reservoir with water. I'm going to do a R/O water flush here in the next minute or two, no nutrients at all, just R/O water. I'll report on the progress over the next day or two.

Found out my caretaker has been doing an organic feeding schedule, and we think there may, in fact, be too much guano/castings in our mix for the plant. We're going to flush some of it out and hope for the best without having to recondition the soil with so little time left. We're scheduled to cut by September 8th. I just.... god I hope this works. It'd be such a tragedy to lose her at this point.