You know I had that same concern. However my earth box has preformed really well for growing weed. Although I am going to grow tomatoes in it this year.

It gets really heavy when the reservoir is full (if you have to move it).

I was real impressed with the results. My model is an older model than the one you have in the diagram. It looks a little different.
ericwt Reviewed by ericwt on . Earthbox I am planning on building an Earthbox out of a 36 gallon Rubbermaid (a BIG one:D ). Does anyone have anything they would like to say about them? I have heard that Cannabis does not like "wet feet", I'm not sure what I can do about it other than have lots of soil. The powdered fertilizer you use in a strip in other Earthboxes will not exist. I am planning on using my liquid nutes and judging what they need by what they tell me during the grow. I am going to be using potting soil with barely any Rating: 5