AirOxi MBBR – special bio media and aeration for bio filters used in RAS aquaculture

 

RAS is a highly intensive form or aquaculture. It works on the principal of zero or almost zero water exchange. In that sense it is the opposite of biofloc.

In biofloc or BFT, water is not exchange and probiotics are added so that microorganisms convert the sludge and waste, thus reducing the nitrates, nitrites, phosphates, ammonia etc in the water.

RAS is now being adapted by aqua farmers across the world. In fact many fish farmers are now moving away from standard designs given by suppliers of RAS system and making their own design. Whatever the design that maybe made by the farmer or supplier, there are 4 main elements in RAS

-        Water exchange, anywhere from 100% water exchange once in 24 hours to once in a week

-        Drum filter to remove physical impurities

-        Bio filter to balance the chemicals , reduce ammonia, phosphates etc.

-        Aeration in the tanks and also in the biofilter

RAS is an innovative method that conserves water and reduces environmental impacts. Among the various components that make up a successful RAS, biofilters play a pivotal role, and the importance of aeration within these biofilters cannot be overstated.

Biofilters is the backbone of any RAS system and it is responsible for maintaining water quality. The biofilter contains bacteria that convert the sludge and waste, breakdown the nitrite and ammonia and keep the water clean. They are nature’s filters.

To keep these bacteria growing and functioning well, they also need aeration. Hence aeration in the biofilter is of paramount importance. If the water flow rate calculations – the duration in which the water is to be exchanged 100% in the system – are mismatched with the quantity of bacteria and the aeration provided to the bacteria in the biofilter, the results can be catastrophic.

In such a case, the biofilter is not able to handle the excess load of ammonia, nitrites, etc. and their quantity starts increasing exponentially.

Insufficient aeration can lead to oxygen depletion within the biofilter, creating anaerobic zones. In these zones, different groups of bacteria can proliferate, including those that convert nitrates back into harmful ammonia. This phenomenon, known as denitrification, can reverse the nitrification process, reducing water quality and posing a threat to the health of the aquaculture system's inhabitants. Adequate aeration helps prevent the formation of anaerobic zones, maintaining a stable and healthy biofilter environment

A good RAS system needs to incorporate in its design 3 elements of the biofilter

-        Which bacteria culture to have in the bio filter – this will depend on the species of fish in the culture

-        What is the size of the bio filter – this will depend on frequency of water exchange, how long should 100% exchange take

-        What is the aeration to be provided in the biofilter – this will depend on the initial quantity of bacteria culture that you are adding in the biofilter and the MBBR media used

AirOxi offers very high intensive aeration system for the biofilters. When water is aerated, it allows oxygen to diffuse into the biofilter media, creating an oxygen-rich environment where the bacteria can efficiently carry out nitrification. Without proper aeration, the biofilter media could become oxygen-deprived, leading to a decline in bacterial activity and reduced nitrification efficiency.

The biofilter aeration system offered by AirOxi has 3 parts

-        AirOxi spider – with 6 way connector with one inlet and 6 outlets and without using AirOxi tube

-        Special MBBR media that floats and bounces on water developed by AirOxi

-        Blower to provide air through the 6 way spider

Apart from supporting beneficial bacteria, aeration also directly benefits fish health in RAS aquaculture systems. Fish require well-oxygenated water to breathe and grow optimally. If oxygen levels drop, fish can become stressed, leading to reduced immunity and increased susceptibility to diseases. Proper aeration in the biofilter ensures that oxygen is continuously supplied to the entire aquaculture system, supporting fish health and growth.

 

In conclusion, a good RAS system needs a well-designed biofilter and proper aeration needs to be given to this filter. This is the heart of the system and this is what separates RAS from other technologies of aquaculture.

Contact us at: +91 9652122060 or mail us at: info@airoxi.com

 

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Best aeration for fresh water fish culture

 

Fish culture in India is of various species – Tilapia, Mangur, Rohu, Catla, Mrigal etc. Most are fresh water fish and are mouth breathing, so it seems that when one does fish culture, there is not much need of artificial aeration. Considering the low density of farming and species of fish, as well as the long duration of growth, natural aeration is sufficient in many cases.

However, there are many times when artificial aeration is needed for even fish culture. Some of these situations can be:

-        High density fish farming where the density of fish is many times than what is found in its natural habitat

-        Requirement of faster growth and large weight of the fish in a shorter time

-        Balancing various parameters like pH, ammonia, phosphates, nitrates, nitrites, etc.

With low Dissolved Oxygen (DO) in the water, fish growth will slow down. The water parameters that oxygen helps regulate by oxidation – often called the Chemical Oxygen Demand (COD) will also suffer. As a result the sludge, extra feed, waste, nitrates, hydrogen sulfide, phosphates, ammonia etc. will not breakdown further and cause problems in the water.

Low dissolved oxygen would be first seen as increased time taken to finish the feed by the fish. Later one would notice that the fish are not increasing their feed intake and finally one would notice that the fish are not growing as expected. In the meantime if there is a disease, it will spread very fast due to low immunity of the fish. With low DO there is a high chance of infection and even the entire culture failing.

Although aeration and high dissolved oxygen in fish farming is important, the biggest challenge is that the cost of production needs to be very low. The price of fish and its fluctuation and long culture periods do not allow for high costs of aeration.

So a good aeration system for fresh water fish farm would need to be low cost as well as efficient.

One of the best methods for fish culture is diffused aeration. With this method the bubbles from the bottom of the pond or tanks provide high DO across the tanks or pond.  When tanks are used for fish farming – whether regular or biofloc fish farming (BFT), AirOxi Spider is often used because it is the most convenient and easy form or aeration.

 You can view many videos and calculate the aeration required from the aeration calculator available online.

You can contact us at: +91 7285017087 or mail us at: info@airoxi.com

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Best Aeration Solution for Hatcheries? – AirOxi Oxygen Concentrator, trusted brand, best quality, reliable results

 

Proper aeration is as important as good feed and healthy environment for healthy growth of marine life in aquafarms. In fact, despite nutritious feed and a good pond, if the management of dissolved oxygen is improper or inadequate, then the produce will be negatively affected.

Brand AirOxi, offers varied range of aeration solutions for proper management of dissolved oxygen, depending on the type of pond. Over decades, it has now become the most reliable brand and our clients have shown immense trust in the quality of our products and services.

In this blog, we will refresh the benefits of AirOxi Oxygen Concentrators - the best aeration solution to get proper dissolved oxygen, conducive for optimum growth in hatcheries.

 

So let us review the major reasons why AirOxi Oxygen Concentrator the highly preferred solution by hatcheries:

1)     Discharge capacity of 93% pure oxygen/litre/minute.

2)     Oxygen flow rate is 10 litres/minute

3)     Compatible under most weather conditions as it operates well in temperatures from 5 degrees to 40 degrees.

4)     It facilitates higher yield, that too without increasing the quantum of feed.

5)     Designed and developed by an ISO????? certified company with a manufacturing experience of 50+ years. 

6)     AirOxi manufacturers believe in research & development, innovation and very high-quality standards.

7)     The power consumption is low, i.e. 0.5 kw only, hence can be easily operated using an inverter.

8)     Cost of operation is just 10% of the cost of operation of oxygen cylinders

9)     It comes with a compressor and dehumidifier that help to keep outside impurities at bay.

10) The operation creates very low pressure, leading to minimal water movement. This ensures that the fingerlings /larvae are not disturbed.

 

For more details on advantages of oxygen concentrator, please click here: https://www.airoxitube.com/airoxi-oxygen-concentrator-an-ideal-solution-for-hatcheries/

Product Specifications:

AirOxi Concentrator weighs about 30 kg, and dimensions are  is 0.3*0,3*0.5 meters (length*width*height) high with a diameter of 0.3*0.5   It needs input voltage of 220 volts AC 50 HZ and consumes 0.5 kw of power. For detailed description of pro please click here: https://airoxitube.blogspot.com/2022/06/airoxi-partners-with-redox-of-norway.html

Furthermore, AirOxi Oxygen Concentrator is easy to clean, highly efficient, flexible and simple to extend and has an excellent distribution capacity. Click here for a video of this product:

 

 

 To avail this excellent product, or to know more, contact us as: +91 7285017087 / www.buy.airoxi.com

Three Different types of aeration tubes as per your aeration requirement

 There are many types of aqua farms and aquaculture systems. Some of the common ones are:

Hatchery, Nursery, Growout ponds with mud bottom, Growout ponds with PE lined bottom, Biofloc or BFT culture, RAS or Recirculating Aquaculture System, IPRS or In Pond Raceway System, Aquaculture in small tanks, Aquafarming in large tanks, etc.

Each of these system is designed and useful for different species, at different life stages of the aqua life, and for different climates and outputs. Hence their aeration needs are also vastly different.

Understanding this diverse needs of aqua farmers, AirOxi offers 3 distinct type of aeration tubes

1 – Very Fine Bubble – AirOxi Pearl

2 – Regular Medium size Bubbles – AirOxi High efficiency tube

3 – Large bubbles – AirOxi XTRA

High Resolution image of AIROXI PEARL (Smooth Tube)	High Resolution image of AIROXI Regular Finish Tube	High Resolution image of AIROXI XTRA (Rough tube)

As you can see clearly from these high resolution images taken with a special 100X zoom camera -

All 3 types have different grain structure. However they are all very uniform within the tube

The material used in all 3 is of extremely high quality and durability as expected from AirOxi. And they are all suitable based on the kind of aeration required.

Ø  AirOxi Pearl – is a tube with a very smooth finish and has very fine bubbles – 0.2 to 0.5 mm size – ideal for high aeration, low movement like in RAS. The pressure required to operate this is higher than for regular tubes.

 

Ø  AirOxi high efficiency tube – Medium rough finish, with a bubble size 0.5 to 1.0 mm – ideal for most applications like Growout ponds, tanks, nurseries, and IPRS etc. – gives high aeration and moderate water movement with moderate frequency of cleaning

 

Ø  AirOxi Xtra – Rough tube with big bubbles for extra water movement and low aeration, and low maintenance. Ideal for Biofloc or BFT – with a Bubble size 1.0 mm and bigger. It works on very low pressure blowers, so is especially suited for single stage ring blowers.

 

Since the pressure required by each type is different we do not recommend that you mix and match when using these different tubes.

AirOxi also offers other specialized tubes like the AirOxi STAR (for biofloc ponds), the AirOxi NC-16 (for one time low cost use in mud bottom ponds) and the Airoxi – 22 , a special low pressure tube for use with ring blowers.

Do visit our website products page for more details about our aeration tubes and products.

www.buy.airoxi.com

contact us at: +91 7285017087 / info@airoxi.com

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How to decide the type of Aeration Equipment for different types of fish farms and ponds?

 

Different Aeration Options From Airoxi – For All Types Of Ponds From Hatcheries To Nurseries, Growout, Biofloc, RAS or IPRS

 

In aquaculture – be it a Nursery, or IPRS, or RAS, or Growout Pond or Biofloc, or Hatchery, water-flow or water circulation and dissolved oxygen play a significant role to get good quality and quantity of produce. Hence, appropriate aeration is very important in all types of fish farming. However, it is important to know that the type of aeration differs with the type of fish farm.

AirOxi – the leading brand for reliable aeration solutions, provides a wide range of aeration solutions for all types of aqua farms. Be it Biofloc - where dissolved oxygen needs to be maintained and monitored diligently, or RAS - where water usually flows around in one way, or Grow Out Ponds - where fingerlings are grown to marketable size or hatcheries for artificial breeding or Nurseries or even fish tanks, Airoxi provides aeration solution to suit all types of aquaculture. Here are some of the various options from AirOxi:

Aeration Turbine Blower

This 1HP – two stage turbine blower comes with a directional grid. Since it has more pressure, it gives higher air flow than a single stage blower. This aeration system is perfect for IPRS that has rapidly flowing water. Its directional grid helps to give proper flow and creates ideal pressure to generate required DO levels. For more information, visit: https://www.airoxitube.com/iprs-and-use-of-airoxi-tube-in-the-new-technologies/

AirOxi Oxygen Concentrator & AirOxi Micro Bubble Generator

These aeration systems are highly effective for higher yields in nurseries.

AirOxi Oxygen Concentrator

This system is suitable in all climates as it works well in a wide range of temperature from 5 – 40 degrees Celsius. With a very high discharge capacity of 93% pure oxygen, it can generate 10 litres of oxygen/minute. It also helps hatcheries to save on high costs of oxygen cylinders during transportation of seed bags. 

AirOxi Micro Bubble Generator:

The micro bubble generator gives a flow rate of 3 – 5 LPM and can be controlled as desired. Its fine bubbles and limited movement makes it the best way to achieve the desired level of Dissolved Oxygen at a fast rate. With AirOxi Micro bubble generator, you can increase the yield of the nurseries due to high percentage of air leading to better water quality, lower rate of mortality, less stress and prevention of red tide and pathogens. To know more, please click: https://www.airoxitube.com/airoxi-micro-bubble-generator-for-hatcheries/

AirOxi Root Blower with AirOxi Tube

This is ideal for cage culture environment. This 1HP blower gives adequate pressure and air against the water head of 4 – 10 feet, thus is highly effective aeration system for cage culture fisheries.

AirOxi Scorpion

It is a plug and play gadget available in two different models – 3HP and 5HP. Scorpion is a forceful jet aerator that sucks surface air and pushes it into the water at a depth of about ½ a meter. AirOxi Scorpion is easy to assemble, provides efficient aeration in all directions and has proved to be a better option than paddle aerators. It is suitable for fish farming and shrimp farming and for every kind of grow out pond – brackish or freshwater ponds.

AirOxi Spider

Ideal for mobile aeration and Biofloc tanks, this convenient and effective option has a diffuser attached with weights to hold it down. It is a ready to use apparatus with all the required parts and fittings. It does not need any additional cost or effort to assemble or set it up.

AirOxi King Spider

This apparatus has a unique diffuser that needs no additional power. It enables aeration with continuous water rotation as well as water flow in a particular direction. It works effectively even in a sludge. AirOxi Spider and King Spider can be used  together too. To add to this, King Spider can be easily connected to a regular blower with half inch inlet pipe.  Click on the link below to view a video of this product: https://www.youtube.com/watch?v=iFSCxH38IMU&list=PL7sVGqBv8y_vmadie54MEMV1Dj8PjG1MO

AirOxi Concentrator with Dehumidifier

This solution good for hatcheries and comes along with a dehumidifier. This oxygen concentrator enables very high DO level of upto 30 ppm with a flow rate of 10 LPM. It also has a ceramic plate that enables airflow of 2-3 LPM, creating a conducive environment for hatcheries.

These solutions are just few of the long list of aeration solution that AirOxi provides. So if you are looking for a perfect aeration solution for any aquaculture environment, then AirOxi is the right step moving forward. To know more about aeration solution you can get in touch with us.

Why AirOxi

We not only offer a wide range of aeration solutions but are also one of the most reliable & reputed aeration brands for aeration. Our experience and interaction with fish farmers, our research, development & innovations, our service and our high quality make us the most preferable brand for all aeration needs.  Contact us at: +91 +91 7285017087 / info@airoxi.com www.airoxi.com 

Aeration system that is a reliable method for your aquaculture aeration needs

 

Aeration system that is a reliable method for your aquaculture aeration needs

How are AirOxi tubes are better than cheaper rubber tubes and International aeration tubes.

• Rigorous quality testing of every coil of AirOxi aeration tube – you can watch our testing videos on our YouTube channel or contact us for more information
• Continuous feedback from our customers and farmers on the product quality and the various suggestions they have for improvement
• Research on latest materials and technologies available to develop new products for the diffused aeration industry

 

Based on such feedback we have continuously developed new products for Aeration. For instance we have specialized aeration tubes and aeration system for Biofloc culture

Biofloc aeration is very different from aeration in growout ponds

• Aeration required is intense because the BOD (Biological Oxygen Demand) is substantially higher due to probiotics and phytoplankton that feed on the sludge – to ensure the carbon-nitrogen cycle is balanced. The dissolved oxygen required is hence quite high as compared to grow out ponds.

 

• Aeration needed in biofloc culture (BFT) is almost 50% more than what is needed in regular earthen bottom ponds

 

• Usually, Biolfoc aquaculture is done in tanks or small-sized ponds, often indoors or covered in shade, in order to manage them better. This results in a smaller surface area of the water exposed to the atmosphere and hence the natural dissolution of oxygen is less.

 

• Moreover sunlight and hence algae giving natural oxygen is also very less, so artificial aeration needs to be much more than in grow out ponds. And the traditional methods of paddlewheel aerator or such surface aerators cannot be used in tanks

 

• The floc needs to be constantly moved and the water movement needed is high. So the diffused aeration needs to also agitate the water. Hence the diffused aeration system cannot be very fine as done in hatcheries, otherwise, it may give good dissolved oxygen but still, the performance may not be suitable for BFT

To help provide the most efficient aeration, AirOxi has developed and launched 3 special aeration tubes :

AirOxi NC – 16 mm

AirOxi – NC 16 mm aeration tube is made by creating precise holes at equal distances in a thin-walled tube. The bubbles are about 50% bigger than the high-quality AirOxi tubes, but these bubbles quickly break down in the sludge and floc in the water. As a result, the overall Dissolved Oxygen is still good, and the large bubbles give the water a high movement.

Due to the good water movement, and the big bubble size that breaks down with floc and sludge, it is ideal for Biofloc and mud bottom ponds

AirOxi – NC 16 mm is

• Lightweight
• High airflow – 2 m3/hour or 30 LPM per meter
• Large bubble size that breaks down in the presence of sludge and floc
• Low cost – can be treated as a one-season product
• Low wall thickness making it easy to clean IF at all it gets blocked
• Moderate SOTR – oxygen dissolving capacity is about 20% less than AirOxi aeration tube
• Very good water movement provided by the bubbles
• Works at very low pressure and can be used with root blower, ring blower or even air pumps

AirOxi Star

The proprietary registered / patented design of AirOxi tube star especially made for aquaculture provides three major advantageous highlights:

• Aeration with minimum cleaning and blocking
• High movement of water
• Reduced back pressure on the blower motor

The tube has crests and troughs along the length – it’s unique design makes sure that very fine bubbles are released from the troughs and not from the crests.

This special design offers air at greater speed from the trough in the decreased thickness area. This ensures no air flows out from the greater thickness location of the crest. Because of this special design, air float comes out at a higher pace and as a result, offers the required motion of water in BFT aquaculture offering better aeration. This additionally affects the decreased choking and blockading of the aeration tube, as a consequence lowering the frequency of cleaning and also offers superior aquaculture aeration.

And since the air is released in a smaller surface area, it comes out with pressure and provides the movement needed in biofloc tank.

 

AirOxi XTRA

AirOxi Xtra is a specialized rough finished tube with a large bubble size and 25 mm outside diameter.

It is becoming the product of choice for many biofloc consultants who see the benefit of good water movement and moderate aeration. AirOxi Xtra has a large bubble size which reduces oxygen dissolution by about 20% as compared to the other high-efficiency AirOxi Aeration tubes.

However, the water in biofloc farms has a very high number of suspended particles – sludge, waste, probiotics, etc. As a result, although the bubbles are bigger at the exit from the tube, they breakdown almost instantly and provide good SOTR and oxygen dissolution. Air flows out in bigger bubbles allowing greater movement. The flow of air is 30 LPM / 2m3 per hour per meter which is even though the same as the regular aeration tube but with a bigger micro bubble size, so the holes don’t get blocked soon and maintenance required is less.

Since the tube blocks very little and has high positive pressure, the maintenance is low. Hence with greater functionality it is one of the most preferred choices among the fish farmers.

Overview of our Quality

Every roll of AirOxi tube goes through 8 rigorous quality checks of dimensions, flow rate, and material properties

Let’s take you through the various challenges that our product has to meet before it reaches you:

• Our AirOxi tube products are ISO 9001:2015 certified, which ensures meeting all the international quality standard tests that product certification requires.
• All AirOxi tubes are RoHS certified – They do not contain any Hazardous material as defined by the RoHS standard
• We ensure fittings and accessories are available for all models and sizes
• Every roll is tested for the flow rate of a minimum of 50 LPM / 2 m3/hr at a depth of 1 mtr in our test tanks
• We regularly install various batches of tubes in our test tanks and check which formulations of raw materials work best

These quality testing and maintenance processes provide us an opportunity to bring our customer’s AirOxi tubes, which are unparalleled in quality metrics and perform far better than those of the Chinese knock-offs that are available at a similar or little cheaper price.

That is why we always suggest please check the AirOxi QR code mark before buying tubes for your aquaculture or hydroponics requirements. To save a few rupees, customers often end up spending thousands of rupees in replacing the tubes, again and again, so thoroughly ensure you get the value of your money’s worth from the product you purchase.

 

Why Choose AirOxi Tube

AirOxi Tube is an Indian brand operating from Gujarat, and the company has manufacturing expertise of more than 50 years. Our decades of experience in the field allow us to deliver the best to our customers. As an Indian organization, we also think like Indians, that is why we understand the value of the money that our customers spend in buying the tubes. It is because as an Indian organization we are not limited to selling and purchasing products, instead, we ensure that the entire aeration solution is provided to the aqua farmer. Our quality testing metrics ensure what you buy from us is the best in the market. At AirOxi tube we serve our customers with premium quality products and service guidelines. To know more about our products please get in touch with us call: +91 7285017087

 

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