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Sustainable Harvesters

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.


System Components

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

Design A

Design B

Design C

Total Plant Sites




Total Grow Space




Harvests a Semester




Annual Lettuce Production

612 - 765 Heads

612 - 765 Heads

1100 - 1375 Heads

Annual Fish Production




System Price




Aquaenvi® Component Parts Included In All Systems •

(16) 2’X2’ 2 Inch Insulation Board With Precut 2 Inch Holes

Net Pots

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

Seed/Vegetative reproduction

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

Microbial processes

Plant nutrition & nutrient concentration testing

Nitrogen Cycle

Fish •

Basic physiology

DWC Floating Raft

Life cycle

Photosyntheses &




Root Growth/Health


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

Andrew Alvis Managing Partner Cell: 713-478-6541 Office: 936-372-3375


sustainable harversters  

pitch book

sustainable harversters  

pitch book