Information about Grouper Aquaculture Indonesia
The actually Indonesian farmer will start
their grouper aquaculture since fingerling is still in smallest sizing. This is
done so the grouper fingerling can be comfortable when staying in the
aquaculture environment which surely not their natural habitat. This aquaculture
environment is usually created using net cage that floats or pond. The pond
used for the nursery itself is usually created in 100 m x 100 m sizing then the
deep is around 1 m or 1.5 m. once the nursery pond is ready then the grouper
fingerling can be put inside this pond.
The grouper fingerling that is put inside
this pond is usually around 5 cm until 7 cm for the length. That is why the grouper aquaculture Indonesia farm usually put
inside this pond around 100 grouper fingerling on each sq m. the grouper fish
that is put inside this pond will be feeding on frozen fish. Then after half
month to one month time, they can grow bigger in 10 cm until 12 cm for the
size. This time, the grouper fish will be feeding on trash fish until they grow
larger. Next they will be feeding on some vitamins, minerals as well as fish
meal. This will make them grow bigger in 15 cm until 20 cm for the size. With
this new sizing, this means they have grow into fry and now is ready for moving
to their new environment that are usually net cage or pond which filled with
brackish for the water.
For the net cage environment is actually
created in specific area as the environment should naturally provide brackish
water as the source. The environment should also be safe from any predators. The
wind as well as the wave in this environment should also be strong. More
importantly; that the environment should gets water change in enough quantity. The
quality of the water in this environment should also be great to ensure that
the fry can grow better.
In this environment, the grouper aquaculture Indonesia technique done is by
using net cage. It is created with bamboo for the pole as well as polyethylene
for the net. The net itself is consisting of two panels when creating the cage.
This first of the two panels will be made with 4 sides to create the cage. Then
the second of the two panels will be made to create the bottom cage. Then the
cage will be attached into pole of bamboo by rope which then made into raft
like for the structure. Last some of the buoyancy is also attached into pole of
bamboo and those are created from plastic gallons.
When it comes to the environment the water
should also be in 27 Celsius which then can go 30 Celsius for the temperature
degree. The oxygen amount should also at 5 mg/liter complete with 26 percent up
toward 30 percent of salinity and 7.8 points up toward 8.3 points for the ph
meter. Thus before using that place, then the water in that environment should
be check so all of the parameters can be known to be optimal.
The grouper
aquaculture Indonesia quality and result will be depended to the
environment where the cage is located as well as the previous parameters we
mention before such as food as well as quality in the water. However, for the
normal result net cage environment with 5x5x3 size can give at about 600 kg for
the result. It will take around seven months for the grouper fish to grow from
the small fish until they are as big as 600 grams.
For the pond environment, then density of
this environment is very important to note. This is why the depth which
generally used on the pond is around 2 meters. Then the bottom part in this
environment is also leveled, so it will make the harvesting become easier in
the end of the aquaculture. When it comes to the sizing, it may be varied with 0.2
ha toward 0.3 ha and the height itself will be at 1.5 m. the environment should
also get enough water that flowing continuously. But then again, the parameters
of the water are actually different compared to the previous environment. In
this environment the water salinity itself is 330 mg/liter, then for the
temperature it should be 16 degree toward 32 degree on the temperature.
Another thing that grouper
aquaculture Indonesia farmer need to pay attention is to the cleanness
of this environment itself. Especially since there would be lots of algae which
start to grow on the bottom part of the environment because it gets enough sunlight.
It can easily be done by installing pipe system inside the environment which
will also help to remove the waste and excreta build up at the bottom of this
environment.
Then those are the information that you
need to pay attention when it comes to grouper
aquaculture Indonesia farming technique. This technique will make them
able to yield optimum result which may reach to tons of grouper fish. And as
the grouper fish itself has high value, this means that the farmer will be able
to earn high amount of earning from this aquaculture method.
