What is Aquaponics
Aquaponics (pronunciation: /ˈækwəˈpɒnɨks/), or pisciponics, is a sustainable food production system that combines conventional aquaculture, (raising aquatic animals such as snails, fish, crayfish or prawns in tanks), with hydroponics (cultivating plants in water) in a symbiotic environment. In aquaculture, effluents accumulate in the water, increasing toxicity for the fish. This water is led to a hydroponic system where the by-products from the aquaculture are broken down by nitrogen fixing bacteria, then filtered out by the plants as nutrients, after which the cleaned water is recirculated back to the animals. As existing hydroponic and aquaculture farming techniques form the basis for all aquaponics systems, the size, complexity, and types of foods grown in an aquaponics system can vary as much as any system found in either distinct farming discipline. (From http://en.wikipedia.org/wiki/Aquaponics)
Picture from opensourceecology.org
- Cultivate edible fish.
- Cultivate vegetables and fruit all year long.
- Work out a good local growing calendar for indoor (artificial light, forced seasons) and outdoor (sun, real seasons).
- Work out a pest control plan proactively.
- Work out good fish feed program and how to make your own fish food.
- Keep the water at a certain temperature, by heating with a compost heap, or cooling with rainwater. Automated.
- Make a fish feeder.
- Build a command and control center
We will grow trout. Trout has the advantance that it is a coldwater fish. No needs to warm our water. Disadvantage is that it is a carnivore, so it has a bigger ecological footprint.
 Trout feed
Instead of buying commercial fish pellets, we will make our own. We get fish waste from a local fish supplier and grind it together with 1/4th of flour.
 Command and Control
For absolute awesome-sauce, we automate the whole aquaponics process. Many things are monitored, and we have one command and control center that manages everything.
See  for more info on this.
 Stuff to take into account
 Energy consumption
- Water flow pump (for circuit between fish tank and grow bed)
- Water flow pump (for circuit between fish tank and compost heap)
- Running Raspberry Pi for continuous measurement of water level, temperature, ph, etc
 Keeping water at temperature
To keep our water at a fixed temperature, we build a compost heap next to the greenhouse. We measure the temperature of the water with an arduino and start a small water pump when the water is too low. This water circuit gets water out of our fish tank and runs through the compost heap, which is around 60°C. The heated water gets back into the fish tank. This continues until a certain temperature is achieved. Getting heat out of the compost (and methane) is called the 'jean pain method'. See http://en.wikipedia.org/wiki/Jean_Pain#Jean_Pain_Composting & http://www.youtube.com/watch?v=bVCaczil4W4
- 350€: Wood for 2 story greenhouse (Sponsored by ptr_)
- 60€: OSB wood for pond frame
- 126€: Pond foil (6x6m) (Sponsored by tom)
- 59€: Pond protection foil (25x1m) (Sponsored by tom)
 Other Aquaponics projects
 Aquaponics at Mediamatic
 Aquaponics at aquaponic.be
By Valentijn, Lotte & Stijn.
 Research materials
- Aquaponics on wikipedia.org
- Aquaponics on opensourceecology.org
- Composting, the Jean Pain method
- Open source ecology: A stirling engine
- Youtube aquaponics video
- Noisebridge Bioboard wiki page
- Long-day control of flowering in everbearing strawberries
- The effect of red and blue light component on the growth and development of frigo strawberries
- Microbial solar cells: applying photosynthetic and electrochemically active organisms