Aquaponics + Farm Towers

Vertical Farms 
(credit to: http://www.verticalfarm.com )


Problem Statement

By the year 2050, nearly 80% of the earth's population will reside in urban centers. Applying the most conservative estimates to current demographic trends, the human population will increase by about 3 billion people during the interim. An estimated 109 hectares of new land (about 20% more land than is represented by the country of Brazil) will be needed to grow enough food to feed them, if traditional farming practices continue as they are practiced today. At present, throughout the world, over 80% of the land that is suitable for raising crops is in use (sources: FAO and NASA).

Potential Solution

The concept of indoor farming is not new, since hothouse production of tomatoes, a wide variety of herbs, and other produce has been in vogue for some time. What is new is the urgent need to scale up this technology to accommodate another 3 billion people. An entirely new approach to indoor farming must be invented, employing cutting edge technologies. The Vertical Farm must be efficient (cheap to construct and safe to operate). Vertical farms, many stories high, will be situated in the heart of the world's urban centers. If successfully implemented, they offer the promise of urban renewal, sustainable production of a safe and varied food supply (year-round crop production), and the eventual repair of ecosystems that have been sacrificed for horizontal farming.

Vertical Farms' Advantages

• Year-round crop production; 1 indoor acre is equivalent to 4-6 outdoor acres or more, depending upon the crop (e.g., strawberries: 1 indoor acre = 30 outdoor acres) 
• No weather-related crop failures due to droughts, floods, pests 
• All VF food is grown organically: no herbicides, pesticides, or fertilizers 
• VF virtually eliminates agricultural runoff by recycling black water 
• VF returns farmland to nature, restoring ecosystem functions and services 
• VF greatly reduces the incidence of many infectious diseases that are acquired at the agricultural interface 
• VF converts black and gray water into potable water by collecting the water of evapotranspiration 
• VF adds energy back to the grid via methane generation from composting non-edible parts of plants and animals 
• VF dramatically reduces fossil fuel use (no tractors, plows, shipping.) 
• VF converts abandoned urban properties into food production centers 
• VF creates sustainable environments for urban centers 
• VF creates new employment opportunities 
• We cannot go to the moon, Mars, or beyond without first learning to farm indoors on earth 
• VF may prove to be useful for integrating into refugee camps 
• VF offers the promise of measurable economic improvement for tropical and subtropical LDCs. If this should prove to be the case, then VF may be a catalyst in helping to reduce or even reverse the population growth of LDCs as they adopt urban agriculture as a strategy for sustainable food production. 
• VF could reduce the incidence of armed conflict over natural resources, such as water and land for agriculture

Vertical Farms' Designs

Courtesy of: http://archdezart.com/2011/09/25/loft-london-farm-tower-competition/

 Courtesy of: http://axisoflogic.com/artman/publish/Article_59707.shtml

Courtesy of: http://www.inspirationgreen.com/vertical-farms.html

Comment:

Farm Towers are nicely suited for Aquaponics system. The fish tanks would be located on the ground floor since it is where the sunlight is most deficient. The hydroponics will then occupy all the floors above it. Using minimal pumps, the water flow would be highly energy efficient since it travels back to the fish tank using gravity. In addition to that, the tower could also be energy independent if renewable energy sources such as wind and solar are tapped.

Aquaponics Trial #2

Hey guys, its been a while.

Here's the second trial I've been doing at my house. Had the first prototype moved out of the shade plus additional 2 pods. Also added a fish tank i acquired from a fish store that's about to move out of town.

Actually these photos here are outdated by 2-3 months, since I've already started to harvest them from August. Anyway, here's a close-up of the pods.

I've been trying a lot of different kinds of vegetable; kailan, lettuce, salad, cabbage, sawi, etc. But the most success I've had so far is the kangkung (water spinach).

The two tanks shown are connected underneath; the right tank receives freshly filtered water from the pods. It has 9-10 lampam fish. The water then travel to the left tank (along with fish faeces), before being pumped to the highest pods to begin the cycle again.

Aquaponics and Worms

Credit to Vermiaquaponics article by Great Lakes Aquaponics
http://greatlakesaquaponics.wikispaces.com/Vermiaquaponics

Vermiaquaponics is actually a word my father and I invented. It is in laymans terms the same thing as aquaponics but with a combination of worm breeding. You use the worm castings to make a nutrient tea which is then used to feed the plants through their roots directly and in the form of foliar feeding. Foliar feeding is when you feed a plant through its leaves. You spray the tea onto the leaves directly and the goal is to have the nutrients be absorbed in more than one way. Then the worms themselves are used to feed the fish thus eliminating some of the cost of fish feed, and making these aquaponic systems more self sustainable.

Vermiaquaponics will soon become the future of aquaponics. In a way many people use certain aspects of it by feeding their plants with extra micronutrients and such.(for example chelated iron, manganese, zinc, etc) But what makes this version so unique is that it will help eliminate the cost of fish feed which becomes an enormous expense. In addition you are feeding your fish great protein which should theoretically help them to grow faster and bigger. Although worms do not give fish 100% of their diet, and are nearly 90% composed of water, so supplements will be required. So essentially your getting your fish wish less cost improving your profit. 


One concern I have about this new form of growing is when it gets to the commercial scale. Places like the University of the Virgin Islands are harvesting over 5 tons of fish annually and in order for something like this to be beneficial to them you would need a very vast number of worms. Making vermiaquaponics less practical on a commercial scale but definately beneficial on the hobby scale. Something to consider if trying to convert from aquaponics to vermiaquaponics is that you will need the space to grow your worms, and to make sure you will have enough worms to be able to integrate this technology into aquaponics.

The focus on vermiaquaponics is to not incorporate it in systems producing such high quantities of fish. For the Urban Farmer, primary focus should be on plant growth in order to make profit. Using as little fish as possible and supplementing with tea will reduce other costs. The key is to get the right number of fish to plant growth ratio and also adding the vermiaquaponics side of the equation. When all these numbers can be worked out maximum plant growth to cost can be achieved giving you maximum profit.

Aquaponics News #2

Newsletter from Nelson Pade's Aquaponics Technology, System and Supplies New Incentive Program for Workshop Attendees An incentive program is now available that rewards attendees of Nelson and Pade, Inc.'s 3-day Aquaponics and Controlled Environment Workshop with a discount on the purchase of Clear Flow Aquaponic Systems®. Beginning with the April, 2012, 3-day Aquaponics and Controlled Environment Workshop, each attendee will receive a certificate (good for 30 days after the workshop) that gives them a substantial discount on the purchase of a Clear Flow Aquaponic System from Nelson and Pade, Inc. 2012 Workshop Schedule Nelson and Pade, Inc. has posted the 2012 workshop schedule.  When you attend a Nelson and Pade, Inc. workshop, you will be presented information based on 20+ years of experience in the three critical areas: aquaponics, controlled environment agriculture and the economics of aquaponics. No matter what your application, understanding these three areas is critical to your success.  Learn from the best!  Attend a Nelson and Pade, Inc. Workshop. Next workshop:  April 19-21, 2012 Clear Flow Aquaponic Systems® Clear Flow Aquaponic Systems® are designed for maximum production with minimum inputs.  From the F5 (Fantastically Fun Fresh Food Factory) to our commercial systems, these are highly productive and efficient systems.  Check out our current projects to see where Clear Flow Aquaponic Systems® are now being shipped. UWSP/Nelson and Pade Aquaponics Course The Introduction to Aquaponics Course/Biology 498, offered in partnership with Nelson and Pade, Inc. and University of Wisconsin-Stevens Point has begun.  This course, co-developed and co-taught by Rebecca Nelson, John Pade, and Dr. Chris Hartleb, is the first of its kind.  The Spring semester course is full, but future course offerings will be announced. Sweet Corn in March? Yes! Our demonstration greenhouse is thriving and we are enjoying an abundance of fresh vegetables and fish.  This week, we ate aquaponically-grown sweet corn, kohlrabi, Swiss chard, lettuce, herbs, beans and huckleberries.  In a couple of weeks, our tomatoes and strawberries will be ripe.  We can’t wait! Questions? Feel free to email or call us with questions: 608-297-8708 info@aquaponics.com Or visit our Aquaponics Information pages.