Prior to considering the various system types, it is necessary to examine the basic design of an aquaponics unit. generally speaking, units consist of two main components: a fish tank; and a grow bed for raising aquaponic plants. some systems are more complex and may also include sumps, refugium or water reservoirs, bio-filters, sediment filters.. Gift tilapia (oreochromis niloticus) pangasius (pangasiandon hypophthalmus) c. model unit: particulars of the ‘small-scale aquaponics unit’ designed by m/s spacos innovations, chitradurga, karnataka are given here as an example: (i) fish pond/tank: area required for construction of the fish pond/tank is 80 m2; diameter of the circular tank is 7.2 m, having a volume of 60 m3 (60,000 litre.
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