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Old 03-10-2015, 04:17 AM
GpsFrontier GpsFrontier is offline
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Join Date: Mar 2009
Location: Lake Havasu AZ.
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Hello budbon,
There isn't a chart that lists plants and gives water uptake requirements for them. There are simply to many variables for any such thing to be accurate. There is however a general rule of thumb to go by:

Small plants, minimum ½ gallons per plant
Medium size plants, minimum 1 to 1 ½ gallons per plant
Large plants, minimum 2 ½ gallons per plant

Tomato plants are one of the largest plants, especially if your growing indeterminate varieties, and don't prune them. Like I said there are just to many to many variables for any type of chart to actually be accurate for all plants, plant sizes, not to mention under all types of growing conditions. But here is an article that helps explain the variables, as well as the types of problems you can run into when the reservoir (water volume) is to small:

What size reservoir do I need
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