and were completely amazed by these.
Aquaponics is based on productive systems as they are found in nature. It can be loosely described as the combination of aquaculture and hydroponics and this is where the name aqua-ponics originates.
Hydroponic systems rely heavily on the careful application of man-made nutrients for the optimum growth of plants. The nutrients are made from mixing together a concoction of chemicals, salts and trace elements to form the ‘perfect’ balance. Water in hydroponic systems needs to be discharged on periodically, as the salts and chemicals build up in the water which becomes toxic to the plants. Aquaculture systems focus on maximising growth of fish in tank or pond culture.
The fish are usually heavily stocked in the tanks often, 10kg in 100L of water. The high stocking rates often mean that the tank water becomes polluted with fish effluent which gives off high concentrations of Ammonia. Water has to be discharged at a rate of 10-20% of the total volume in the tank once a day, everyday. This water is often pumped into open streams where it pollutes and destroys waterways.
Aquaponics combines both systems, and in doing so cancels out the negative aspects of each. Instead of adding toxic chemical solutions to grow plants, aquaponics uses highly nutritious fish effluent that contains almost all the required nutrients for optimum growth. Instead of discharging water, aquaponics uses the plants and the media in which they grow to clean and purify the water, after which it is returned to the fish tank. This water can be reused indefinitely and will only need to be replaced when it is lost through transpiration and evaporation.
Loving it! We might try and set one up while we are still here in Australia, and then depending on how much room we actually have at the new house in NZ, we’d like to set one up there.
I love the thought of having fresh fish, fresh veggies – I could totally live off just that alone!! In addition to our normal veggies we grow, I think we’d be golden!
I’m really eager to hear if anyone else has this type of setup!!! Let me know!!!