Plants Plants absorb the nitrates as nutrients. Plants are usually suspended on floating rafts or in cinder rocks.
Bacteria Naturally occurring bacteria converts ammonia into nitrites and then nitrates.
Water Water pumped through the grow bed is filtered by the plants, and then returned to the fish tank.
Fish Fish are fed food and produce ammonia rich waste. When fish grow to market size, they can be sold and replaced with new fish reared from eggs.
Oxygen Fish breathe in oxygen and breathe out carbon dioxide. Plants absorb the carbon, leaving oxygen-rich water for return to the fish tank.
How Aquaponics Works Aquaponics is derived from two words, aquaculture (raising fish) and hydroponics (raising plants in nutrient-rich water.)
At Sustainable Harvesters, we believe that aquaponics is the future of farming! We trust that this natural farming process is the perfect way to train students and future generations on sustainability, food safety, and food security.
Stay Local. Stay Sustainable. Stay Educated.
250ga Cone-Bottom Polyethylene Tank Polyethylene is light and has extreme resistance to the sun and other weather conditions with a useful life of 20 years. This will be the new home to your fish until they grow out.
Raised Media Basin This is the final filtration of the nutrient rich water before it gets to your plants. It is also a good spot for mineralization of beneficial bacteria to occur. This 4’x4’ grow space includes a square flat-bottom polyethylene tank, 5/8” rainbow gravel, and an AquaEnvi® Automatic bell siphon used to raise and lower the water as it passes through the media.
DWC Grow Bed
(Deep Water Culture) Made from high-grade pressure treated lumber and a long lasting Hercuscrim pond liner, this grow bed is where your plants will grow out until it is time for you to harvest them.
Wooden Education Deck
NFT (Nutrient Film Technique) optional
This 120 sq. ft. 12’x10’ deck is a great addition for hosting class demonstrations and makes feeding the fish and checking the water conditions even easier! The deck is surrounded by 3’ railings and includes two 4’x3’ teaching platforms, and steps.
This system is used as a staging area for your plants before maturing in the DWC.This accelerated system allows for extra food production and includes a high grade pressure treated lumber stand.
Traditional Soil Beds
This is a 55 gallon cone-bottom polyethylene tank with an integrated AquaEnvi® baffle system. The baffle in the bio-filter is used to separate the solid waste before the nutrient rich water enters the system.
The (2) 4’x4’ grow beds filled with traditional potting soil. The grow bed nutrients are supplied by the solid waste extracted from the bio-filter.
System Breakdown AquaEnvi®250
Total Plant Sites
Total Grow Space
Harvests a Semester
Annual Lettuce Production
612 - 765 Heads
612 - 765 Heads
1100 - 1375 Heads
Annual Fish Production
Aquaenvi® Component Parts Included In All Systems •
(16) 2’X2’ 2 Inch Insulation Board With Precut 2 Inch Holes
Grodan Rockwool Cube Sheets
Flat Trays With Humidity Dome covers
6’ Fish Net With Bungee Pull Chord
50 lb. Bag Of Fish Food
Water Temperature Gauge
3 Gram Tilapia
AquaEnvi® System Prices Include •
System Planning, designing and consulting.
All materials, equipments, components needed to run and install the system properly.
System construction and installation labor
Extra Supplies Not Included But Recommended Hach Test Strips-Ammonia, Life Guard Multi Test Strips, Fish Nets 12”X8”, Automatic Fish Feeder, Coil Hose, Lamotte 9 Parameter Test Kit, Grodan A-Ok Grow Cubes, Microbe Jump Starter, Nutrient Rich Water, Compost System W/ Red Worms, Fish Tank Window, Ch Elated Iron, Wooden Plant Markers (24), Garden Essentials Tool Set, 12” Circulation Fans, Curriculum Set (Ea.), Seeds (1 Pkt. 500 Ct.), Flat Bottom Germination Trays, Humidity Domes For Trays, Crushed Granite (Yd.), Fish Food (50Lb.)
Potential Curriculum System
Flow diagramS - “How the system works”
Propogation of plants
How plants live without dirt
Relationships between water levels & gravity
Life cycle of plants
The role of naturally occuring beneficial bacteria
Nutrient Film Technique (NFT)
Water quality dynamics
Plant health & care
Plant nutrition & nutrient concentration testing
DWC Floating Raft
Plant Varieties & Growth Rates
5 to 6 Crops Per School Year
week 1 Germination
week 2 NFT/DWC
One Crop = 6 Weeks
week 4 DWC
week 6 Harvest
Matthew Braud Managing Partner Cell: 832-492-6632 Office: 936-372-3375 Matthew@SustainableHarvesters.com
Andrew Alvis Managing Partner Cell: 713-478-6541 Office: 936-372-3375 Andrew@SustainableHarvesters.com