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This is a guide to building a 2 different great "EarthBox" systems for next to nothing in relation to the $50 commercial version. The smaller is a more experimental idea and may just be TOO small... the larger will work as well or better than the commercial counterpart. This instructable will cost you about $10 for EVERYTHING for the smaller and about $15 for the larger... I recommend building 2 of which ever you chose to bring down cost... or build 2 of each like i did :)
EarthBox is a commercial version of a "self contained gardening systems". From here on out i will call mine TeraHydro Boxes... lol... my own brand... lol
TeraHydro Box explains exactly what it is tho... it is basically a hydro system for growing plants that also incorporates a small amount of dirt for plant stability and fertilizer delivery. Further explanation of the science is in the first step of this project.
The advantages of growing plants in a TeraHydro Box are abundant.
-A place to grow for those without "real dirt" aka large yards
-Requires much less space
-Saves huge amounts of water
-Easy to keep plants well watered
-Almost maintenance free all season after planting
-Huge crop yields
-Easy to grow organic or "regular"
Update!! BOTH the small and large TeraHydro Boxes worked excellent. The Large TeraHydro Box worked much better than the original Earth Box even!! I harvested gallons and gallons of salsa. Way to much in fact, haha... While I still recommend 6 tomato plants for the large THB, 2 would be better for the small one. Six plants was just to much vegetation for such a small area and the plant were a little small from not getting enough light. Check my account soon for more garden projects in 2010! :)