welcome to cabbage hill farm aquaponics systems
DESCRIPTION
Welcome to Cabbage Hill Farm Aquaponics SystemsTRANSCRIPT
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Welcome to Cabbage Hill Farm
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Cabbage Hill’s Aquaponics System…
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Four Tank System
Nutrient-rich fish water is fed from tanks to rotating drum filter The filter removes solids greater than 60 micronsGreater than 60 micron solids are vacuumed off drum filterFiltered water is piped to NFT growing beds
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Drip tubes feed plants Plants absorb nutrients they needAfter plants filter nutrients the water passes through gravel beds under the NFT trays
NFT (Nutrient Film Technique) Growing Beds
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Gravel beds host Nitrifying Bacteria which convert toxic Ammonia into NitrogenCleaned water returns to tanks
Water Return
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Solid Separation
Vacuumed solids are sent to settling tankBaffles trap solidsRemaining water flows to sand bed filterSand bed filter contains wetland plants which absorb Phosphorous and Nitrogen
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Composting
Trapped solids are pumped to compost pilesCompost provides high-quality fertilizer for outdoor gardens
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Vegetables:Lettuce and Micro-greensWatercress and WheatgrassBasil and ChivesWetland plants
Fish:Tilapia and Yellow PerchBass and TroutWalleye
Successful Vegetables and Fish
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Nile Tilapia (Oreochromisniloticus) are the fish of choice for most aquaponic operationsThese fish are easy to raise and make a lot of fertilizerWhen these fish reach 1 1/2 pounds they are sold to a local market
Tilapia are the fish of choice for Aquaponics
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Tilapia are Caught and Sorted
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Prepared for Market
Fish are weighedPut into transport tankDelivered to market
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Greens are Harvested
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Deliver to Local Restaurants…
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Local Retail Markets…
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Getting Started
LicensingAquaponics system and costGreenhouse structure and costAnnual production costProject revenueSystem management
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New York State fish and wildlife special conditions for stocking and selling live fish:Any Trout, Bass or Salmon stocked or sold in NYS must have a permitAny Trout, Bass or Salmon delivered in NYS must have a health certificateBass cannot be resold to the commercial food market in NYS
* EPA regulates effluent discharge into streams, rivers and ponds
* For permits and information contact NYS Department of Environmental Conservation
Licensing
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Four Tank (10,000 gallon) Aquaponics System:4 fiberglass round tanks, 10’dia x 4’deep = $69004 fiberglass gravel beds for filtration, 15’l x 3’w x 1’d = $42001 sump tank for return water, 4’l x 2’w x 2’d fiberglass = $2802 Pumps (second as backup), 1/2 hp = $4001 Drum vacuum drum filter = $25002 Aerators (second as backup) = $1600Plumbing = $1200Estimated total cost = $17,080
Aquaponics System and Cost
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Greenhouse Structure:Greenhouse, 72’l x 30’w = $5000Total estimated cost off the shelf parts = $17,000Heat (dependent on location) = $2500Estimated total cost = $24,500
Greenhouse Structure and Cost
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Fish and fish supplies = $5,000Seeds and plant supplies = $4,000Electricity = $8,000Heating (dependent on location) = $5,000Office and phone = $1,000Vehicle maintenance = $1,000
Annual Production Cost
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Produce = $47,000Fish = $10,000
Project Revenue
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TILAPIA FEEDING RATES
Fish size % Feed0-20 gr 8-10%20-60 gr 6%60-150 gr 5%150-250 gr 4%250-400 gr 3%400-500 gr 2%> 500 gr 1%
* % of feed x total grams of fish = feed per day
TILAPIA WATER QUALITY REQUIREMENTS
Temp. 76 82 FDO > 3.5 ppmNH3 N < 3.0 ppmNO2 < 2.0 ppmpH 7.0 7.5 ppmCl:NO2(Ratio) 7:1 ppmAlkalinity 150 ppmHardness > 100 ppmC02 < 40 ppm
System Management
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NUTRIENT REQUIREMENTS FOR LETTUCEN03 200 ppmP 30 ppmK 200 ppmCa 200 ppmMg 24 ppmFe 3 ppmNa < 50 ppmCl < 70 ppm
System Management (cont.)