Don't get hung up on one brand. The size requirements are approximate. I don't think it's going to make a great difference if the container is 30 or 32 or even 35 gallons instead of 31. The beauty of Ray's system is that it can be adapted to many different sizes. There is plenty of fudge room. If you've ever seen the commercially available Earthbox, you know it's a heckuva lot smaller than the Earthtainer. It works fine and will support 4 pepper plants easily. I've done as many as 6 with respectable results. For your Earthtainer just make sure you get a good quality container and try to make it a light color, especially in the Sunbelt. Even then, poor quality containers will work, they just won't last as long. Dark colored containers can be covered with a light colored shield of some type, even an old bed sheet. They just won't look as cool.
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