Aquaponics is the ultimate system for home food production.

In a small space, you can grow both vegetables, fruit, herbs and edible fish.

It can be as simple or complex, and as small or large as you want

There are several types of systems that are used in commercial aquaponics but the most common system for a backyard is the CRS (Closed Reciprocating System) which also sometimes referred to as flood and drain cycles. Water flows through the gravel beds at intermittent times (controlled by a timer) to provide a more aerobic environment for the plants (i.e. providing greater access to oxygen) and prevent the chance of root waterlogging and rot.
A typical Closed Reciprocating System has the following components:

  •  Tank (ponds or tanks) for growing fish, crayfish or other species.
  • Hydroponic system for growing vegetables, fruits or other plants.
  • Collection tank or sump - lowest point in a system that collects runoff from the hydroponics before pumping back into the aquaculture growing tank or pond.
  • Filtration systems for removing unwanted components in water.  

For example:
The filtration system may include various mechanisms such as:

  • A biofilter to remove things like dead animal tissues, uneaten fish food etc. 
  • A settling tank or compartment where solids can be extracted from the water.
  • A biofilter to convert toxic ammonia in water to useable nitrates.

You can get a solid understanding of the concept by simply reading our ebook; or if you want to take it a step further, study our aquaponic course and get all the support you need from a team of tutors including professional aquaculture and horticulture scientists.