1. Course title AQUACULTURE
course code : ANS 415
Group ASSIGNMENT
CONSTRUCTION AND MANAGEMENT OF PLASTIC TANKS
FOMENA TCHINDA
SIEWE ANAELLE
MBANGO SARAH
MENO FOUSSA
NOUKEU BRANDON
FORKWEN BRADLEY
3. • Definition
plastic tanks in aquaculture are rearing tanks where the
breeds is reared into a period determine with different
size of fish with a wter depth of 1.5 to 2m
4. Type of plastic tanks
• Circular tanks
• Rectangular tanks
NB circular tanks have uniform water quality
and a good distribution velocities
5. Construction
thing to considerbefore constructing and
aqualculturesite
location
the area have to very calm free and also factors have to
been take into conditition such as
-acessability of the area
-the fish been reared is been accept by the village people
- the avaibilityof water
6. construction method
taking example the plastic tanks constructed for the growing of big fish such as the clarias garipinepus
circular tanks
materials
tarpaulin
pipes
wire mesh grill
Hammer
drainner
tap
Method
- unfold your wire mesh grill if it was foldbut it straigh ,measure your iron mesh grill
-Fold it in large circular way then hold with fastening wire
- Use a hammer to hit it gentling so that it should have a good circular form
- then mesure also your tarpaulin so that it should have the diameter as the mesh grill for it to been
well fixe
- insert your tarpaulin into your circular mesh grill tract it until it well fixed
- use robs to tired it so that it should be straight and well fixed
7. Construction of drainage sytem of over
flow
using a bulk head ( made up of female and male part ) place it on the down part of the
tarpaulin then mark it
use a blade and cut the area mark , then insert the male part of the bulk head in the
tarpaulin .
with the use of a carp a pipe , use a carp fixed it inside the male part of bulk head.
with the use of a knife make small hold on the pipe the fixed it on the carp and close
the upper part with small net.
the outside part
use an adaptor pipe to fixed on female part of the bulk head ( fixed it with traid tape)
use a pipe reduicer to gum it on the adaptor gum(pvc gum)
gum your bulk cage using a pvc gum, use a small pipe gum it at the end of bulk
8.
9. Management system of big fish
• the management system is divide into various part
• feeding
• drainage
• calibration
• Sales
the drainage is done twice a day morning and afternoorn where the water in tank are
drains to the various galter the water from the tap or the tipe are allow to flow to clean
the dirt after the bulk cage is close and the tap is open filled the tanks
feeding is done according to various size of the fish and it is done twice in the
morning and in the aftertoon
taking for example the growing sector
11. Calibration
• Calibration is the selection of big fish from the
smaller in a tanks it is done after 3 weeks that
when the fish have 100 g and it is done using
a calibrating machine
• sales
•
