Characteristics of DWC grow bed
12 to 24 inches in depth
Plants are placed in small plugs, made of coconut coir, tree bark, rockwool, soil, or clay pellets
Plants float on styrofoam rafts
Water flows slowly underneath styrofoam rafts
Deep water gives plenty of room for plant roots to grow unimpeded deep into the water
Deep water allows aquaponics system to hold greater quantity of water, which creates more stable condition for water temperature and water chemistry
Disadvantages of DWC grow bed
Water is heavy! DWC beds should not be stacked vertically on top of one another
Plant roots are constantly submerged in water, so water must be well-oxygenated (air pump recommended)
See below an example of a Deep Water Culture (DWC) grow bed by Murray Hallam of Australia.
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