Queries: Keeping Ancient Fish Using Modern Techniques Presented by OTF

**D24** · 30-01-2011, 03:45 PM

Pls post yr queries here

D24

**D24** · 02-02-2011, 08:13 AM

More abt the Speaker. Thx to Ong88 for this info...

D24

Source: The New York Times
http://www.nytimes.com/2010/10/28/bu...fish.html?_r=1

SINGAPORE — Last December, a deadly plankton bloom wiped out 34 fish farms off the coast of Singapore, killing most of their stock — about 400,000 fish, including tiger garoupa, sea bass and red snapper.

SIF Agrotechnology Asia Pte Ltd
The first land-based tank fish farm in Singapore, scheduled to open in November.

To avoid such losses in the future, a high-tech Singapore farming company is about to open the first onshore tank farm for salt-water fish cultivation.

After three years of research and testing, SIF Agrotechnology Asia, a subsidiary of the water treatment company SIF Technologies, plans to open its fish farm on land Nov. 15. The fish will be raised using what is described as a new environmentally friendly, chemical-free water-treatment system that protects fish from changes in water quality and from threats like plankton and algae blooms, which may occur when pollution causes a rapid increase in simple cell life forms in an aquatic system.

The system, patented by SIF Technologies six years ago, uses hydrocavitation to create changes in water pressure and vapor bubbles. When the bubbles collapse, they oxygenate and disinfect the water, breaking down any fish waste that is present. Unlike typical aquarium systems, it uses no chemical filters.

“I think that’s the major difference with other water-recycling technologies available out there, which usually use some disinfectant agent in their water-recycling process,” said Matthew Tan, the chief executive of SIF Technologies. “It’s an inexpensive method with excellent long-term, cost-comparative advantage, albeit a natural way to disinfect the water as we are moving toward bio-secure fish production.”

The company started its aquaculture initiative in 2007. It created a research farm last year in northwestern Singapore before building the new farm in the northeast, near Changi Aiport.

The commercial inland farm is spread over 1,400 square meters, or 15,000 square feet. It has 22 cylindrical hatchery tanks, each holding 2.5 tons of water, and 24 raceway tanks, each holding 10 tons of water. The farm’s goal is to raise as many as 1.5 million fingerlings a year.

The company plans to sell most of the fingerlings to local floating fish farms, but it intends to keep enough for an annual production of about 1,200 kilograms, or 2,645 pounds, of adult fish to be sold locally.

“We will farm our own fish, but my main emphasis for the business is the fingerlings,” Mr. Tan said.

Mr. Tan said the new farm cost $500,000 to build, excluding the land and infrastructure. The company has already sold its anticipated fingerling production to a cluster of floating fish farms off Pasir Ris, a residential area in Singapore

There are 115 licensed farms for food fish in Singapore, including six based on land. Together they produce about 4 percent of the 88,000 tons the country consumes every year. These are mainly coastal fish farms, breeding saltwater fish like grouper, sea bass, snapper and milkfish, as well as shrimp and mangrove crabs. There are also freshwater fish farms producing snakehead, tilapia, catfish and carp.

The Agri-Food and Veterinary Authority of Singapore has set a goal of increasing fish farming in Singapore to meet 15 percent of consumption needs. To achieve this, said Lim Huan Sein, the authority’s deputy director of aquaculture technology, local farming expertise must be increased, including research and development capability, technology and skills. Capability must also be enhanced, the representative added, as well as financial plans for industry upgrading and marketing promotion.

In December, the government started a food fund of 5 million Singapore dollars, or $3.85 million, which was increased this month to 10 million dollars. The fund supports Singapore’s food supply resilience, especially in terms of rice, chicken, pork, fish, eggs and leafy vegetables.

Mr. Tan believes aquaculture has big potential because farming in the sea with cages is becoming less reliable.

“Sea-cage farming is a sunset industry,” he said. “They cannot produce any more fingerlings in sea cages and if you ask sea-cage farmers, they will tell you they’re producing less and less fish.”

“I believe one day all these farms will have to be located on land, because red tides are now happening more frequently than they used to,” he added, referring to algae blooms. “It will take time, but the industry is going through a transition.”

Lee Van Voon, a fish farmer, agrees, in part. Mr. Lee owns a small sea-cage fish farm that was slightly hurt by the plankton bloom last year. While he wants to keep his offshore business, which produces about three tons of fish a year, Mr. Lee said he was considering expanding inland, using a setup similar to that of SIF Agrotechnology Asia.

“We’re lobbying the government to get more land,” he said. “Sea farming is very challenging, but on land you can control the water much better. It can be technical, but you can learn.”

He prefers fish tanks over fish ponds, in part because the ponds require much more land. He also said that “for marine fish, ponds are not as controllable, because you have the rain water to contend with.”

SIF Agrotechnology Asia hopes its farm will be reproduced internationally.

“We’re building this model farm with an operation manual,” Mr. Tan said. “We hope we will be able to go into either licensing or joint venture, and we’re prepared to do the technology transfer.”

**D24** · 02-02-2011, 08:18 AM

Thx to Ong88 for this info...

Golden Circle hydrocavitation
filtration system.

hyDrOCaVitatiOn saVes mOney anD Water

Golden Circle saves thousands of litres of water and dollars per year through the installation
of a hydrocavitation system on cooling tower water. Cycles of concentration in the cooling
towers has been increased from three to more than seven, saving approximately 8 mL/
year and chemical use has significantly dropped. the reduction in chemical usage had an
additional bonus of reducing wastewater treatment requirements. the hydrocavitation
system is leased by Golden Circle at a rate considerably less than the savings, providing
a cost effect option. (Golden Circle is an ecoBiz participant.)

**D24** · 02-02-2011, 08:19 AM

Thx to Ong88 for the info...

Hydrocavitation

hydrocavitation is a chemical free system of water treatment. two streams of water are accelerated
to high velocities and collide which results in hydrodynamic cavitation and mechanical shear forces,
which are believed to kill bacteria and reduce corrosion activity. it removes the need for chemicals
and can increase the ability to reuse water.

it is generally applied to cooling tower water (refer to case study below) as it can control corrosion
and kill legionella. however, new studies are investigating the efficiency of removing heavy metals,
phosphorous and trichloroethylene (tCe) from wastewater with additional reductions in BOD.

this series of fact sheets provides examples and suggestions to the modern food processor on how
to achieve both economic and environmental benefits from eco-efficiency. Visit the project website
www.ecoefficiency.com.au for more ideas and case studies.

**Ong88** · 02-02-2011, 09:24 AM

can't thank me, must thank Google

some home koi ponds have their $15k system, wonder how big the system is.
if the footprint can fit into non-landed will be fantastic.

**D24** · 03-02-2011, 07:58 AM

Doc, for this model, it is the size of a sports shoe box. One of this equipment can service the entire shed of tanks/ponds in the farm.

I think that it will be oversize for your EFS. If you are thinking of using this and you are able to get your hands on one, you will probably need to install a timer to moderate the performance.

Unfortunately, they do not supply to ornamental sector as the food fish sector is already keeping them so busy, they can already hardly cope.

Therefore, the reason for this talk is not to sell his product, but to share knowledge with hobbyists, so that we do not have to rely on "old wives' tales"...

D24

03-02-2011, 04:25 PM

Hi, im not a AF member. Can i sign up and pay the $20 fee without goin through any members??

haya23busa · 03-02-2011, 05:49 PM

Quote:

Originally Posted by Zakevich

Hi, im not a AF member. Can i sign up and pay the $20 fee without goin through any members??

Sorry this registration is for AFC members. We will open to AF members after 5th Feb if there are still available slots.

04-02-2011, 08:57 AM

Quote:

Originally Posted by haya23busa

Sorry this registration is for AFC members. We will open to AF members after 5th Feb if there are still available slots.

Alright, thank you.

BubbleBubble · 18-02-2011, 08:31 PM

The event is a go hor?... Tomolo

30-01-2011, 03:45 PM	#1
D24 AFC Committee Join Date: Feb 2006 Posts: 5,104	Queries: Keeping Ancient Fish Using Modern Techniques Presented by OTF Pls post yr queries here D24 __________________ *For Hobbyists..... By Hobbyists.....*

02-02-2011, 08:13 AM	#2
D24 AFC Committee Join Date: Feb 2006 Posts: 5,104	More abt the Speaker. Thx to Ong88 for this info... D24 Source: The New York Times http://www.nytimes.com/2010/10/28/bu...fish.html?_r=1 SINGAPORE — Last December, a deadly plankton bloom wiped out 34 fish farms off the coast of Singapore, killing most of their stock — about 400,000 fish, including tiger garoupa, sea bass and red snapper. SIF Agrotechnology Asia Pte Ltd The first land-based tank fish farm in Singapore, scheduled to open in November. To avoid such losses in the future, a high-tech Singapore farming company is about to open the first onshore tank farm for salt-water fish cultivation. After three years of research and testing, SIF Agrotechnology Asia, a subsidiary of the water treatment company SIF Technologies, plans to open its fish farm on land Nov. 15. The fish will be raised using what is described as a new environmentally friendly, chemical-free water-treatment system that protects fish from changes in water quality and from threats like plankton and algae blooms, which may occur when pollution causes a rapid increase in simple cell life forms in an aquatic system. The system, patented by SIF Technologies six years ago, uses hydrocavitation to create changes in water pressure and vapor bubbles. When the bubbles collapse, they oxygenate and disinfect the water, breaking down any fish waste that is present. Unlike typical aquarium systems, it uses no chemical filters. “I think that’s the major difference with other water-recycling technologies available out there, which usually use some disinfectant agent in their water-recycling process,” said Matthew Tan, the chief executive of SIF Technologies. “It’s an inexpensive method with excellent long-term, cost-comparative advantage, albeit a natural way to disinfect the water as we are moving toward bio-secure fish production.” The company started its aquaculture initiative in 2007. It created a research farm last year in northwestern Singapore before building the new farm in the northeast, near Changi Aiport. The commercial inland farm is spread over 1,400 square meters, or 15,000 square feet. It has 22 cylindrical hatchery tanks, each holding 2.5 tons of water, and 24 raceway tanks, each holding 10 tons of water. The farm’s goal is to raise as many as 1.5 million fingerlings a year. The company plans to sell most of the fingerlings to local floating fish farms, but it intends to keep enough for an annual production of about 1,200 kilograms, or 2,645 pounds, of adult fish to be sold locally. “We will farm our own fish, but my main emphasis for the business is the fingerlings,” Mr. Tan said. Mr. Tan said the new farm cost $500,000 to build, excluding the land and infrastructure. The company has already sold its anticipated fingerling production to a cluster of floating fish farms off Pasir Ris, a residential area in Singapore There are 115 licensed farms for food fish in Singapore, including six based on land. Together they produce about 4 percent of the 88,000 tons the country consumes every year. These are mainly coastal fish farms, breeding saltwater fish like grouper, sea bass, snapper and milkfish, as well as shrimp and mangrove crabs. There are also freshwater fish farms producing snakehead, tilapia, catfish and carp. The Agri-Food and Veterinary Authority of Singapore has set a goal of increasing fish farming in Singapore to meet 15 percent of consumption needs. To achieve this, said Lim Huan Sein, the authority’s deputy director of aquaculture technology, local farming expertise must be increased, including research and development capability, technology and skills. Capability must also be enhanced, the representative added, as well as financial plans for industry upgrading and marketing promotion. In December, the government started a food fund of 5 million Singapore dollars, or $3.85 million, which was increased this month to 10 million dollars. The fund supports Singapore’s food supply resilience, especially in terms of rice, chicken, pork, fish, eggs and leafy vegetables. Mr. Tan believes aquaculture has big potential because farming in the sea with cages is becoming less reliable. “Sea-cage farming is a sunset industry,” he said. “They cannot produce any more fingerlings in sea cages and if you ask sea-cage farmers, they will tell you they’re producing less and less fish.” “I believe one day all these farms will have to be located on land, because red tides are now happening more frequently than they used to,” he added, referring to algae blooms. “It will take time, but the industry is going through a transition.” Lee Van Voon, a fish farmer, agrees, in part. Mr. Lee owns a small sea-cage fish farm that was slightly hurt by the plankton bloom last year. While he wants to keep his offshore business, which produces about three tons of fish a year, Mr. Lee said he was considering expanding inland, using a setup similar to that of SIF Agrotechnology Asia. “We’re lobbying the government to get more land,” he said. “Sea farming is very challenging, but on land you can control the water much better. It can be technical, but you can learn.” He prefers fish tanks over fish ponds, in part because the ponds require much more land. He also said that “for marine fish, ponds are not as controllable, because you have the rain water to contend with.” SIF Agrotechnology Asia hopes its farm will be reproduced internationally. “We’re building this model farm with an operation manual,” Mr. Tan said. “We hope we will be able to go into either licensing or joint venture, and we’re prepared to do the technology transfer.” __________________ *For Hobbyists..... By Hobbyists.....*

02-02-2011, 08:18 AM	#3
D24 AFC Committee Join Date: Feb 2006 Posts: 5,104	Thx to Ong88 for this info... Golden Circle hydrocavitation filtration system. hyDrOCaVitatiOn saVes mOney anD Water Golden Circle saves thousands of litres of water and dollars per year through the installation of a hydrocavitation system on cooling tower water. Cycles of concentration in the cooling towers has been increased from three to more than seven, saving approximately 8 mL/ year and chemical use has significantly dropped. the reduction in chemical usage had an additional bonus of reducing wastewater treatment requirements. the hydrocavitation system is leased by Golden Circle at a rate considerably less than the savings, providing a cost effect option. (Golden Circle is an ecoBiz participant.) __________________ *For Hobbyists..... By Hobbyists.....*

02-02-2011, 08:19 AM	#4
D24 AFC Committee Join Date: Feb 2006 Posts: 5,104	Thx to Ong88 for the info... Hydrocavitation hydrocavitation is a chemical free system of water treatment. two streams of water are accelerated to high velocities and collide which results in hydrodynamic cavitation and mechanical shear forces, which are believed to kill bacteria and reduce corrosion activity. it removes the need for chemicals and can increase the ability to reuse water. it is generally applied to cooling tower water (refer to case study below) as it can control corrosion and kill legionella. however, new studies are investigating the efficiency of removing heavy metals, phosphorous and trichloroethylene (tCe) from wastewater with additional reductions in BOD. this series of fact sheets provides examples and suggestions to the modern food processor on how to achieve both economic and environmental benefits from eco-efficiency. Visit the project website www.ecoefficiency.com.au for more ideas and case studies. __________________ *For Hobbyists..... By Hobbyists.....*

02-02-2011, 09:24 AM	#5
Ong88 Prof SK Ong Join Date: Jan 2009 Posts: 10,641	can't thank me, must thank Google some home koi ponds have their $15k system, wonder how big the system is. if the footprint can fit into non-landed will be fantastic. __________________ Just because it's a bad idea doesn't mean it won't be a good time. Use imgur for your photos sharing https://play.google.com/store/apps/d...m.imgur.mobile Last edited by Ong88; 02-02-2011 at 09:27 AM.

03-02-2011, 07:58 AM	#6
D24 AFC Committee Join Date: Feb 2006 Posts: 5,104	Doc, for this model, it is the size of a sports shoe box. One of this equipment can service the entire shed of tanks/ponds in the farm. I think that it will be oversize for your EFS. If you are thinking of using this and you are able to get your hands on one, you will probably need to install a timer to moderate the performance. Unfortunately, they do not supply to ornamental sector as the food fish sector is already keeping them so busy, they can already hardly cope. Therefore, the reason for this talk is not to sell his product, but to share knowledge with hobbyists, so that we do not have to rely on "old wives' tales"... D24 __________________ *For Hobbyists..... By Hobbyists.....*

03-02-2011, 04:25 PM	#7
Zakevich Guest Posts: n/a	Hi, im not a AF member. Can i sign up and pay the $20 fee without goin through any members??

18-02-2011, 08:31 PM	#10
BubbleBubble Senior Dragon Join Date: Aug 2007 Posts: 4,401	The event is a go hor?... Tomolo

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