Plant production capacity and nutrient mass balance in the PAFF Box, an urban aquaponics module: Preliminary findings (And its place in human geography research.) James Gott Prof. Haïssam Jijakli Boris Delaide Geography and Environment Gembloux Agro Bio Tech University of Southampton, UK University of Liège, Belgium System temperature aim: 25°C The PAFF Box Fish: Nile Tilapia (Oreochromis niloticus) Plants: Basil (Ocimum basilicum var. ’Grand Vert’) Lettuce (Lactuca sativa var. ‘GBP’ System details: 1. Fish tanks: 2 x 0.380 m³ 2. Sieve gravity filter 3. Biofilter: SHARK BEAD microbead filter 4. Deep Water Growbeds: 2 x 0.275 m³ 65 plants per bed 2 x 0.345 m³; 83 plants per bed (31 pt/m²) 5. Occupies 71.21m³ 6. Total water volume of 2.673m³. STSM: aims and objectives Describe: 1) Plant and fish production capacity 2) Water and energy consumption over one season production 3) Analyse all macro- and micronutrient budgets Additional aims: 4) Experience running aquaponic systems 5) Ethnographic data collection Methods: Cultivation Plan 1. Seedlings: Sown into Rockwool Watered with tap water Enter PAFF box after 15 days Cultivation Plan 2 pH Alkalinity TAN=NH3-N NO2-N NO3-N Mean 6.64 25.00 0.75 0.06 67.55 Results SD 0.64 21.02 0.70 0.03 12.57 Observation (N) 21.00 13.00 13.00 13.00 13.00 min 5.50 5.00 0.30 0.02 42.60 max 7.53 80.00 2.25 0.12 88.00 NO3-N concentration and Water added over time 100 90 80 70 L / G 60 M E 50 T A R 40 T I N 30 20 10 0 DATE NO3-N Results pH and water added over time Water in pH 900 8 800 7,5 700 600 7 ) L ( D E 500 D D 6,5 H A P R 400 E T A W 300 6 200 5,5 100 0 5 DATE Fish production 50 Total feed (kg) 25.4 45 44,834 40 43,035 Total days 91 35 ) G 30 mortality (%/d) 5 30,5393 ( 25 S S A 20 M 15 FCR: 3.28 10 SGR (%/d): 0.47 5 0 GR (g/d): 0.90 1.07.2015 22.09.2015 29.09.2015 DATE