Algae and shellfish growth in the ponds-pens  is a curent problem for aquaculture farmers because it leads to fish disease and financial loss.

Therefore,some fish farmers are forced to apply toxic chemicals  pesticides to combat nitrate and algae.

 

Since the purpose of these chemicals is to kill off algae and shellfish, contamination of the breading stock and water poses a serious threat to fish health and meat quality.

 

Also, diseases are easily spread among farmed fish due to the high concentration of fish.

 

Antibiotics are commonly used in aquaculture in order to prevent (or treat) a disease outbreak but overuse (especially if used for non-therapeutic purposes) may lead to drug-resistance in these farmed fish and increase farming cost.

 

ASMP series can provide a multifaceted approach to asist control algae  in water treatment while maintaining an ecologically friendly approach..

Sonic waves works in the same fashion and in doing this it has become highly effective at dealing with water issues, otherwise known as planktonic algae. What’s interesting is that it can also prohibit the growth of other types of algae as well. Even string algae and floating pond scum, and bio film can be measurably effected by ultrasound in fresh and salt water.

• Along with this wonderful, wide ranging ability, ultrasound also stimulates any existing beneficial bacteria that is in the pond and by increasing the vitality of this element of the pond, it thereby helps in the cleansing and balancing of the pond as well.
• Asm sonic technology has proven to be very safe for fish and wildlife. In tests, fish find the underwater emitter or “transducer” to be of interest, but there is no reaction of fear or discomfort in it’s presence.
• To expose fish to sonic wave treatment during last stage before harvesting can in prove fish quality externally and flavour.

The  Asm sonic technology is very simple when compared to aeration systems and other pond care tools. One simply plugs in the power cord, secures the control panel and install the transducers into the water, pointing it towards the centre of the pond. Immediately the sonic wave is sent throughout the pond and begins the treatment.

 

Recomended products links

• ASMP-50
• ASMP-100-1
• ASMP-200
• ASMP-500-1
• ASMP-1000-1

 

ASMP in use at Pejo barramundi farm near Innisfail.

A circular current is flowing around the pond, driven by aerators, at 6m/min. This means that the pond water is regularly flowing in close proximity to the transducers.

This particular pond was chosen as it had a dense Microcystis, algea bloom .

 

• The results show virtually no Microcystis left; the water looks fresh and has no odour showing that the Microcystis in the treated barra pond has been dissolved with the ASMP series while it is still present in the other 8 similar ponds on the farm not fitted with an ASMP system.
• An important result is that there is no adverse effect whatsoever on fish behaviour. They are feeding normally and this is generally the best sign they are happy.
• This definitely indicates that the changes are caused by the ASMP ultrasound system in the test pond.
• Low power use and NO Chemicals used.

 

Phase 2 of this project 1-1-2012

The objective of this phase is to determine differences in the off-flavour compounds that were originally present in the water. On this farm we had previously observed that off-flavour compound level was co-incident with Microcystis blooms, even though the Microcystis itself does not produce the compounds. We are therefore not entirely sure whether getting rid of the most obvious blue-green algae species will get rid of the off-flavour and so need to await the results of the lab testing soon.

Updated interim results 1-4-2012

The attached chart shows a reduction of 92% of the geosmin levels in the barramundi production pond water. Geosmin and a similar compound, 2-MIB, are well known flavour compounds that cause muddy flavour in fish and shellfish around the world, particularly in fresh water systems – both natural and aquaculture. The compounds are produced by algae and certain microbes, are not toxic to fish or humans, but impart unpleasant flavours to fish flesh even at extremely low concentrations. To make matters worse, fish actually accumulate it in the flesh rapidly and then get rid of it only very slowly when the source is taken away.

• Reduction of 92% of the geosmin levels
• The results indicate that there is virtually no Microcystis left
• No adverse effect watsoever on fish behaviour
• Water looks fresh and has no odour.

As a guide, the levels of geosmin concentration in the water shown in the chart go from problematic at the highest (i.e. will give the fish an off-flavour) to no problem at the lowest (i.e. the fish will not accumulate sufficient levels to affect taste). Fish farmers strongly desire a tool that gives them control over geosmin concentration in pond waters as standard pond management other techniques have not been successful .The above result is achieved with ASMP ultra sonic wave technology from ASM

Which system do I need?

It is fundamental for a successful installation and operation of an ASMP ultrasonic sonic system for the under water targeted area. Depending upon the flow, volume, sise and the location of this project will determine which of our manufactured product you need.

Product and supply inquieries contact us