Media Filled Grow Beds: The Basics
Media Filled Grow beds are the simplest form of aquaponics. They use containers filled with a suitable growing media such as expanded clay balls, pumice stone, gravel or something similar. Water from a fish tank is pumped over the media filled beds and plants grow in the rock media.
This style of system can be run two different ways, with a continuous flow of water over the rocks, or by flooding and draining the grow bed in a 'flood and drain' or 'ebb and flow' cycle.
The growbeds should be about 12" in depth as this has been proven to be the most effective depth for plant growth and the cultivation of a beneficial ecosystem in the beds.
Once the water reaches the appropriate level then it will be drained from the grow bed (usually quickly) which will draw oxygen back down into the growbed for the benefit of the plants and microbes. This cycle then continues regularly and provides the plants with all of the nutrients that they need to grow extremely abundantly and naturally without any added pesticides, herbicides or fertilizers.
Urban Aquaponia of Austin can design and build a setup to fit any space requirement you desire. Give us a call today!

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