37-gallon Roughneck for Earthtainer?
I'm having trouble finding enough 31-gallon Roughneck containers for my Earthtainer ambitions in the San Diego area. Home Depot has the 37-gallon version. I've seen some people mentioning they had used these for Earthtainers. Are there any pitfalls I should know about? Could I go with three tomato plants in these, perhaps?