Vol. 12, Issue 4 (2023)

Author(s):
Narpat Kumar, SK Sharma, BK Sharma, ML Ojha and Mansi Jain

Abstract:
The present study was conducted for a period of 60 days to determine the growth performance of Common carp (Cyprinus carpio var. communis) fingerlings at different stocking densities and Spinach (Spinacia oleracea) Plant, grown in deep water aquaponic system. The experiment, was conducted with five treatments each with three replicates. A homogenous stock of fingerlings was randomly distributed in five treatment groups with stocking density of 5, 10, 15, 20 and 25 fish in T1, T2, T3, T4 and T5 respectively with addition of 10 plants in each tank. The fish was fed at 3% of their body weight. The important water quality parameters including air temperature, water temperature, pH, dissolved oxygen, electrical conductivity, total hardness, total alkalinity, ammonia, nitrate, nitrite, sodium and potassium were analyzed and average air temperature (26.175 ºC), water temperature (25.5 and 27.4 ºC), pH (7.4 and 8.4), dissolved oxygen (6.1 and 6.8 mg/l), electrical conductivity (152 and 163.6 ms/cm-1), total hardness (615 and 634 mg/l), total alkalinity (121 and 158 mg/l), ammonia (0.0001 and 0.0025 mg/l), nitrate (0.022 and 0.094 mg/l), nitrite (0.030 and 0.073 mg/l), orthophosphate (0.43 and 0.88 mg/l), sodium (0.612 0.872 mg/l) and potassium (0.55 and 2.23) were noted in all treatments respectively during experimental period. The result shows that all water quality parameters in all treatments were existed within the permissible for aquaculture. On the basis of these result, it also concluded that aquatic environment of deep water aquaponic system was favourable for the fish survival and plant growth.