Air Table

Marijuana Horticulture

by Jorge Cervantes

Air tables are simple, easy to use hydroponic gardens. Seasoned growers and novices love their simplicity and low maintenance. The unique operating principle is simple, effective, and nearly fail-safe. The nutrient solution is forced up to the growing bed with air pressure generated by an external air pump. The pump can run on ordinary household electrical current or a solar powered 12-volt system.

Once flooded, the nutrient solution stays in the growing bed for a few minutes before it drains beck to the reservoir. Constant air pressure during flooding also aerates the growing medium. The sealed, airtight reservoir limits evaporation, which in turn prevents algae growth and keeps the nutrient fresh. The external pump reduces the overall cost of the system and helps prevent electrical accidents. You can use rockwool, coco coir, peat, or a composite growing medium with excellent results.