Hydroponics reservoir volume calculator

Determine the volume of liquid your water container can hold.

Find the total liters or US gallons your reservoir can hold by simply entering the length, width, and depth. This data is essential for determining the correct ratio of nutrients, the total liquid that will be consumed by your plants or the maximum number of drip irrigation feeders, etc.

Define the minimum tank size needed by the quantity and species of plants you will be growing. As a general rule of thumb when growing hydroponically, small plants require at least ½ gallon per plant, medium plants 1 ½ gallon and large plants 2 ½ gallons.

*We strongly recommend choosing a reservoir that is twice the determined minimum (or greater). Don’t forget that when flowering and fruiting your plant's needs can more than double!