Pseudo is the root-word for many other words. Pro is the root-word for many other words. Poly is the root-word for many other words.
Tomatoes in gardens have an advantage over container plants -- they can spread their roots out far and deep in search of water. Even so, the same rule of thumb about even soil moisture applies. Tomato plants need about 1 to 1 1/2 inches of water each week to fruit, according to Ohio State University. There's no need to measure, so long as you maintain an even soil moisture. At the beginning of the growing season, this may mean watering in the morning until the soil is thoroughly damp and remains damp all day.
The larger this reservoir, the more stable and successful your hydroponics system will be. At minimum, each small tomato plant (such as cherry tomato plants) will require 1/2 gallons (1.9 liters) of water, while most, somewhat larger tomato plants will require 1 gallon (3.8L) each.. Decide which type of system to use. There are several varieties of hydroponic systems, and tomatoes can grow well in any of them. The instructions in this section will teach you how to construct an ebb and flow system, which is relatively cheap and easy to build.