I would make sure that it is steel or ceramic, and not copper, or aluminum. Then you will want to make sure that the drain functions as you will want plenty of drainage. You can fill the tub with potting soil, or a mix of topsoil, compost and any other amendments that you would like. This article will give you more information on what tomatoes require: https://www.gardeningknowhow.com/edible/vegetables/tomato/growing-tomatoes-guide.htm
Answered on March 1, 2019
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