Nobody can challenge the fact that pond aeration is really critical to the potent health and vivacity of fish. When your pond does not have adequate oxygen, fish get stressed and the growth rate comes down significantly. Inadequate oxygen at the pond bottom results in fish waste buildup and it also leads to the excess presence of other types of organic nutrients. As these types of materials decay, toxic gases are generated that are extremely dangerous to fish health. You cannot control this situation with the help of surface aerators and paddlewheels. That is exactly where the importance of new technology known as recirculating aeration system (RAS) comes in.
Major Advantages of RAS
For commercial aquaculture purposes, people have started depending on recirculating systems because it offers a lot of advantages compared to other types of aeration methods. RAS requires considerably less water than other types of aeration methods. Another benefit is that it can be located in more areas. If you make use of this system, you can culture more quantities in a lesser volume and the fish production goes uninterrupted year around. These types of systems are highly environment friendly and they have better flexibility in terms of expandability as well. All these benefits play the most important role in making RAS immensely popular among a large number of fish farmers.
Adding dissolved oxygen and degassing other types of gases
In any fish pond, the presence of dissolved oxygen is highly critical. When you follow high density fish farming methods and make use of feeds that contain elated levels of protein; the quantity of oxygen available in the water often comes down. High quality tubes for recirculating aeration systems such as AirOxi Tube focus on adding dissolved oxygen (DO) to the pond for making up the DO consumed by fish and waste breakdown. Best aeration systems also degas other types of dissolved gases available in high concentrations. The presence of gases such as CO2 in high concentrations is extremely dangerous to fish health because they lower the pH levels of the pond. So the best RAS solutions add dissolved oxygen to the pond efficiently and systematically and they also degas the dangerous dissolved gases to promote excellent fish growth.
Different types of Aeration Systems
Different types of methods are utilized for aerating systems. The most common one is making use of oxygen injection. Other popular methods include air diffusers, air lifts and packed column aerators. Air diffusers also called air stones are extensively used in stagnant systems and today, they are also widely used in the commercial fish farming systems. When it comes to packed column aerators, spraying low oxygen water at the top of the column is performed and the flow rate is maintained at low levels to prevent the column from flooding. As far as air lifts are concerned, oxygen is added through the air injection into the water using a vertical pipe.
How do best RAS function?
Top quality products such as AirOxi Tubes for recirculating aeration systems make use of mechanical and biological filtration methods to sustain water quality. In order to eliminate or remove solids from the system, mechanical filtration is employed and these filters consist of screens, separators or granular filtration. Biological filters remove excess nutrients like nitrite and ammonia and it is a very vital thing in sustaining proper water quality. When you use best aeration products such as AirOxi Tube, the standard of oxygen transfer rate gets three times faster than conventional aerators. The standard of aeration efficiency becomes four times higher and you just need 1/4 HP of power to run the aerator compred to conventional systems. The tubes are made using a unique blend of polymer and additives, and the micro holes available make sure small bubble size and excellent oxygen transfer rate. Installation and use also become highly uncomplicated because of the sinking design of the aeration tube.
Since top quality recirculating aeration systems such as AirOxi Tube are installed at depth, uniform distribution of DO becomes a reality and it does not interfere with the aquatic life. These types of RAS systems require only low maintenance and the food conversion ratio can be improved significantly. Most importantly production becomes higher and faster and you can expect 30 to 40% yield improvement per hectare.
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