Brackish Water Aquaponics

29 Pages·2017·2.4 MB·English

Brackish Water Aquaponics
Anthony Adams*, Andrew J. Ray
Graduate Student
The Division of Aquaculture
Kentucky State University, Land Grant Program
[email protected]
Inland Production of L. vannamei
• Salinity range 1 to 20 part per
thousand (ppt.)
• Indoor and high tunnels recirculating
aquaculture systems (RAS)
• Two phase
• Nursery
• Grow out
• Harvesting at 90 day
Biofloc & RAS (BF)
• Biofloc systems
• High turbidity (NTU)
• Microbial community
• Algae
• Bacteria
• Protozoans
• Uneaten feed and other organic matter
• Benefits
• Nitrification
• Provide supplemental nutrition
• Reduction in filtration
• Requires high aeration, more
inconsistent water quality
Water Quality
As water is reused, nitrogen Water is a resource
accumulates • Constantly adding saltwater
• Water changes
Nitrogen impact on • Filter discharge
shrimp
• High mortality Solutions
• Stunted growth and • More time spent monitoring
varying sizes during water
harvest • Large water change
• Costly • Reduction in stocking density
• Better filter
• Aquaponics
Aquaponics
The marrying of aquaculture and hydroponics practice
to produce a wonderful baby.
• Fish and Feed
• Nutrients form Aquaculture
• Structural design of Hydroponics
• Deep Water Culture
• Ebb and flow
• Nutrient Film Techniques
• Coupled vs. decoupled
Decoupled Aquaponics
Aquaponics broken down to its base parts
• RAS
• Hydroponics
• Remineralization
Benefits
• Reduced Stress on Aquatic organisms
• Control of independent systems
• Temperature independent
• Warm-water shrimp and cool weather crops
• Optimization of systems
Trial materials
• 16-24 buckets with, 3-4 plant per buckets and Polystyrene
foam board
• Seeds and planting trays
• Airline and airstone
• 10 mL to 18 L of treatment water (fresh, salt, shrimp
biofloc)
• 0-50 mL liquid fertilizer
• 24 day timer and LED lights
• Box fans
• Randomize treatment
• Grow media
• Rockwood cube
• Perlite
• Vermiculite
• Net cup
• GrowGrips
Plants
Cochlearia (Scurvy Grass) Beta vulgaris (Swiss chard)
Scurvy Grass
What is the salinity tolerance of Scurvy grass?
• Germination successfully in perlite with freshwater 5 days
• Place under LED light for 12 hrs. a day
• 10 days later plants were give liquid Fertilizer at (3-2-6 NPK)
5 days later plants were transferred to grow grips and placed
•
in floating polystyrene of 6 flats
• Mixed solution of 50mL liquid fertilizer per 18L
• 300 mL of water
• LED scheduled drop to 10 hrs. a day
Scurvy Grass
What is the salinity tolerance of Scurvy grass?
Salinity adjustment occurred at 28 day from germination
• Rate of 5 ppt. per day increase until treatment range was
obtained
• Treatment trials 0, 5,10, 15, 20, and 25 ppt. salinity