Bio-floc Subsidy

TECHNOLOGY” FOR THE FY 2023-24(40-60% Government assistance)

Bio-floc fish farming
Bio-floc fish farming

Fish and brackish water shrimp farming can be a great way to boost productivity and generate high income in a limited area. One technique that can help achieve this is bio-floc technology. Bio-flocs are basically micro-balls made up of unused feed, shrimp/fish waste, bacteria, and other microbes suspended in the water tank. By adding probiotic bacteria to the tank, these microbes settle on the bio-floc surface and start breaking down the nitrogenous waste from organic particles, using carbon and oxygen. This process not only helps recycle nutrients but also maintains water quality in the tanks.

The consumption of bio-flocs by shrimp and fish has shown many benefits, including improved growth rate and feed conversion efficiency. The principle behind bio-floc technology is to create a nitrogen cycle by maintaining a higher C:N ratio. This is achieved by stimulating the growth of heterotrophic microbes, which assimilate the nitrogenous waste and provide it as a feed for the cultured species.

Benefits of Bio-Floc Technology:

  1. This system is eco-friendly and helps reduce the negative impact on the environment by recycling organic waste.
  2. It improves the efficiency of water and land use.

iii. It can be implemented in urban and peri-urban areas.

  1. It is a system with limited or zero water exchange, which prevents water pollution and the spread of pathogens outside the system.
  2. It supports higher productivity of fish and shrimp while reducing the amount of feed used, thus increasing the profit margin for farmers.

Target Group and area of operation:

  1. Interested farmers with available land for installation of the unit.
  2. Must be a resident of Odisha with a valid Aadhar card.

iii. Must have a bank account in their name in the state of Odisha.

  1. Must have an Aadhar-linked mobile number for registration in the Go-sugam portal.
  2. Beneficiaries who have already received assistance for less than 6 tanks (90 cubic meters) under any other schemes.
  3. Farmers, private entrepreneurs, and unemployed youth are eligible for assistance under this scheme.

vii. Fish farmers with grow-out tanks, nursery and seed tanks, fish and shrimp hatcheries can also be covered under this scheme.

viii. Priority will be given to unemployed educated youth, as Bio-Floc farming can provide employment opportunities.

Eligibility and Selection of Beneficiaries:

Farmers who are interested in setting up grow-out tanks, nursery and seed tanks, fish and shrimp hatchery operators, private entrepreneurs, and unemployed youth are all eligible to receive assistance under this scheme. However, priority will be given to unemployed educated youth since Bio-floc farming involves advanced technology. The beneficiaries will need to undergo specialized training on Bio-floc systems before they can operate the unit.

  1. The eligible brackish water shrimp farms, nursery and seed tanks, and hatchery beneficiaries must have the necessary license from the Coastal Aquaculture Authority.
  2. The support provided will be in the form of back-ended assistance for the installation of a Bio-floc system inside a shed with brick masonry tanks, water supply, drain and aeration units. Additionally, input assistance will be given for the culture in the tank.

iii. The assistance will be available to the above categories of beneficiaries with a minimum of 2 tanks (30 cubic meters) and a maximum of 6 tanks (90 cubic meters).

  1. If a beneficiary has previously received a subsidy for the installation of a Bio-floc unit under different schemes of the Government of India and State Government, for less than 6 tanks, they will still be eligible to receive further subsidy under this scheme. However, in such cases, the subsidy will be limited to a maximum of 6 tanks, which will include the installation of the tanks from earlier.
  2. When availing the subsidy, the beneficiary family will be considered instead of individual members of the family. One beneficiary family should not receive multiple benefits under one particular scheme. If any member of a family has received a subsidy during the last three years, the family will not be eligible for subsidy under the same scheme.
  3. The concept of family members does not apply to WSHG members covered under the WSHG-biofloc scheme. This will not prevent them from having an individual unit beyond biofloc for WSHG.

Unit Cost and pattern of Assistance:

Models No of
Unit cost
Capital +
Input (In Rs
Subsidy pattern
for General
Category (40%)
In Rs. Lakhs
Subsidy pattern
for SC, ST,
Category (60%) In
Rs. Lakhs
Type-1 2 2.00 0.80 1.20
Type-2 4 4.00 1.60 2.40
Type-3 6 6.00 2.40 3.60



Details of Bio-floc Model:

Unit Cost and Pattern of Assistance (Brick Masonry

Bio-floc tank of 30 cubic meter capacity (Brick Masonry)

Sl. No. Items Unit Unit
Subsidy per unit @ 40% of total cost for



per unit @ 60%
of total cost
A Capital Cost
1 Biofloc tank: brick
masonry tanks with
frames, solid base,
drain pipe and fish net
covering (4 m dia X 1.3
m depth tank = 15000 L
capacity) for two tanks
or one tank with 30
Cubic meter capacity
2 90000 36000 54,000
2 Wooden/ Bamboo
shed including
installation costs
(covered with shade
net) Floor area: 50m2
(10 m length x 5 m
width)Height: 3 m
1 10000 4000 6000
3 Electric water pump
(0.5 HP)
1 4000 1600 2400
4 Ring Blower / High
pressure air pump
(100-120 W,single phase AG)
alternatively one
blower will run 24×7/
2 20000 8000 12000
5 Electronic weighing
1 1000 400 600
6 UPS unit with Inverter
(1100 VA) and battery
(150Ah) or Portable Genset
(1 Kilo Watt)/or any
other back up system
1 25000 10000


A Total Capital Cost 150000 60000 90000
B Operational Cost per
1 Water Management
(water pumping,
probiotics, aeration  etc)
Lumpsum 10000 4000 6000
2 Fish fingerling(25gm)
including packing and
transportation (Tilapia/
carp/ Scampi/shrimp/barb
etc.) or Cost of Spawn/
Fry for seed rearing
within the financial
ceiling of cost of
stocking material
8000 3200 4800
3 Formulated feed (24- 30% crude protein & 3% fat)


11520 1280 17280
B Operational Cost Total 50000 20000 30000
C GRANDTOTAL(A+B) 200000 80000 120000

Under this model, if the beneficiary desires he/ she may construct two tanks or one tank with minimum 6O cubic meter tank capacity.


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