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aquaponic soil-less cultivation
1.
2.
3. What is aquaponics?
• “Aqua” literally used for fish.
• “Ponics” used for soil less medium.
• Aquaponic is the farming of fish and plants in a single recirculating
system.
• The waste from the fish becomes the nutrients for the plant.
• Plants in turn remove these nutrients from the water and purifying it
for the fish.
• In the way the fish waste is used to grow a plant crop.
4. How aquaponics works?
• Fish are raised in a tank.
• Water from the fish tank is pumped to the plant.
• Bacteria convert ammonia and nitrite to nitrate
• The waste from the fish becomes the nutrients for the plant.
• Plants in turn remove these nutrients from the water and purifying it
for the fish.
• In the way the fish waste is used to grow a plant crop.
5.
6. The world faces number of crises today
• Increasing population
• High fuel consumption
• Food shortage
• Global warming
• Inorganic food consumption
• Water shortage.
• The best alternative for this is aquaponics..
7. Types of aquaponics:
• There are three main type of aquaponics.
• Gravel bed culture
• Deep water culture
• Nutrients film technique.
8. Gravel bed culture:
• In this method plant are rooted
in course gravel
• Bacteria grow on the media and
convert the ammonia excreted
by the fish to nitrate.
• Plants within the grow beds
remove the nitrate from the
water.
• No mechanical or biological
filtration is required.
9. Deep water culture:
• The water from the fish is filtered mechanically and biologically to
remove the solids from the suspension and convert the toxic
ammonia to benign nitrate.
• This clear water then travels down the length of a tank of water in
which polystyrene rafts are floated.
• Plants are rooted through the holes in the polystyrene sheets and into
the water below, where the roots take up nutrients from the water.
• DWC is most suited to leafy crops and there is some discharge of
water during the filtration process.
10.
11. Nutrient film technique:
• NFT work by flowing nutrient-rich water through a narrow trough
such as PVC pipe.
• Plants are placed in holes drilled in this pipe and the roots dangle
freely in this stream of water.
• This method of growing works very well for plants that need little
support such as strawberries and other herbs.
• NFT is also great way to utilize unused space because hey can be hung
from ceiling above other growing areas.
12.
13. Vertical aquaponics:
• One of the greatest aspect of
this method to grow incredible
amount of food in small area.
• Plants are stacked on top each
other.
• Water flow in top of tower and
flow through wicking material
that the plant root absorb water
and nutrients from.
• The water then falls into fish
tank.
14. Essential component of an aquaponic unit:
• Fish tank
• Mechanical filter
• Bio filter
• Hydroponic container
• Water circulation unit
• aerators
15. Fish tank
• Essential component in every unit.
• shapes
➢Round
➢Square
➢Oval
• Material
➢Plastic
➢Fiberglass
➢cement
16. Mechanical filter:
• Separation and removal of solid and suspended fish waste from fish
tanks.
• It is essential for the health of the system
• Types of filter
✓Screen filter
✓Sedimentation
✓Sand or bead filters
17. Bio filters:
• The bio filter is installed between the mechanical filter and
hydroponic containers
▪ Living bacteria
➢Nitrosomonas
➢Nitrobacter
• Volcanic gravel plastic bottle caps, PVC, shaving and nylon scrub pads
act as substrate for bacteria.
• Nitrosomonas bacteria convert ammonia into nitrate.
• Nitrobacter then convert nitrite into nitrate
18. Water qualities in aquaponics:
• Oxygen
• pH
• Temperature
• Ammonia
• Nitrite
• Nitrate
• Water hardness
19. How do you maintain aquaponic system?
• 1. Choose the tank carefully. Fish tanks are a crucial component in
every aquaponic unit. ...
• 2. Ensure adequate aeration and water circulation. ...
• 3. Maintain good water quality. ...
• 4. Do not overcrowd the tanks. ...
• 5. Avoid overfeeding, and remove any uneaten food. ...
• 6. Choose and space the plants wisely. ...
• 7. Maintain balance between plants and animals
20. Is aquaponics better then traditional garden?
• We have found that the aquaponic plants grow and produce faster in
the system than in a traditional garden
• . The advantage of aquaponics is that, during warm weather the
plants get as much water as they need.
• Plants grown in the ground use the water very quickly in hot weather.
21. Advantages of aquaponics:
• Fish waste is utilized as plant feed rather then being wasted.
• Excellent crop quality both in term quantity and taste.
• Provide truly organic form of nutrients for the plants.
• No soil born disease as there is no soil use no water is wasted or
consumed by weeds.
• Crop can be grown all year round.
• Faster growth to market size due to optimal conditions being
maintained.
• Root temperature very stable resulting in fewer disease issues than
hydroponics.
22. Disadvantages of aquaponics
• Some of the disadvantages may include:
• High start-up investment costs for aquaponics technology and
equipment.
• Aquaponics systems include several places where dysfunction could
lead to failure of the whole system (and loss of fish).
