In-depth Look At Aquaculture Systems Recirculation Setup Technology
Aquaculture is in simple terms agriculture done in water or under water.
A more detailed description of the terms is as follows; aquaculture system is the culture for rearing aquatic animals especially that of fish e.g. shellfish, oysters, trout, salmon, etc.
It also includes the cultivating of aquatic plants for food such as seaweed.
The cultivation is usually done in controlled conditions of marine or freshwater environments, however it can be done in nature.
Aquaculture systems have been seen to be around for centuries, with the advancement in knowledge, experience and technology helping in its development and methods.
Early records of the practice involved the transfer of young or otherwise immature fish or shellfish from their natural habitat and taking them to an artificial environment controlled and set to favor their survival and growth.
Later on, this changed to farmers fertilizing harvested fish eggs and rearing the successfully hatched fishlings in either tanks or ponds until they reached maturity.
Types of aquaculture supplies
Aquaculture systems are a combination of supplies one needs to start up their fish farm.
The systems combined create a conducive environment for the fish to thrive.
Aquaculture rearing tanks sale range from high-tech industrialized systems for large commercial production, intensive indoor systems that can be monitored with high tech equipment, to small ponds in where the fish are reared for domestic consumption only.
These beginners know-how will help one to choose wisely when selecting the specific supplies and will also help reduce cases of losing or death of fish, and other technical difficulties caused by negligence.
This equipment includes;
Round tanks are self-cleaning, which is a big advantage it comes with; this works in that the solid deposits that settle at the bottom accumulate towards the middle where the outlet is situated.
Raceways are straight sided artificial channel; their main benefit is that they are easy to build in series, and also to empty fish by using a simple crowding screen.
The D-ended tanks are very economical in terms of space, have self-cleaning capabilities and without lowering the rates of velocity, they also lower tank turnover time.
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Water Pumps come in handy to ensure a freshwater supply in the fish ponds or lakes especially during the summer. Hot weather conditions combined with the amount of water splashed out regularly leads to the water levels significantly decreasing.
The pump is built to supply fresh water from a nearby source that replaces the loss of water.
On the other hand, pumps are useful when the farmer needs to drain the fish pond, lake or after a harvest when they need to replace the water in order to introduce new batch of fish into the pond or lake.
In specific areas where water shortage may be experienced, the pumps can be used to drive the used water into recycling pools where it is purified.
Once this process is complete the water can be pumped back into the pond or lake, this process tends to save water and helps farmers to run their fish ponds all year round if they please.
Types of pond pumps that are common in the market are the turbine pump and a centrifugal pump.
The difference in the two comes from the way they are set, the turbine is set vertically while the centrifugal is set horizontally; however they are both very effective in their work.
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Air circulation is a crucial aspect in aquaculture as it ensures the adequate oxygen supply to the fish, and it is especially essential to farmers who want to increase the fish population in a particular fish pond.
Aeration devices allow farmers to practice aqua farming indoors if they are looking for alternatives.
Other benefits of installing aeration or recirculating aquaculture system devices are that the pumps increase the quality of recycled fish pond water.
There are several types of aeration devices found in the market with suppliers developing new technology that makes them better each year and with each new product in the market.
These devices include;
- Injector aerators
These devices aerate the tanks or ponds from the bottom up by drawing air from the surface, transforming it into finely distributed bubbles into the water.
- Propeller aerators
It comes with a propeller that is mounted and allows very high water circulation through which the transfer of oxygen into the water is induced.
A protection basket that is made out of stainless steel comes with a propeller to prevent accidental injuries when dealing with smaller fish.
- Aerator pumps
These are very popular with ponds as they can come with a fitted nozzle that sprays water in a fountain spray pattern. They come in two specific varieties, one that floats on the water surface while the other option that is submerged.
- Paddle aerators
These are mainly used in intensive ponds and raceways, and they work similar to propeller aerators.
- Gas diffusers
These are mainly used for fish transportation and in emergency cases. They come in varieties that include rubber diffusers, ceramic plate diffusers (for micro bubbles), ceramic diffusers (professional aeration) and gas diffusers (with high performance).
- Air blowers
These come in two varieties; membrane compressors which supply oil-free air that is best for transportation of live fish, and regenerative blowers that use the modern technology which apply knowledge of pressure and vacuum in the transfer of oxygen into the water.
- Oxygen generators
These add dissolved oxygen directly into the water, which has shown to have very positive effects on the growth rates, the mortality rates and the feed conversion rates.
These are used when fish harvesting time has come.
The seine is made to sink to the bottom of the pond or lake, after which the reel is then made to gather in the outer edges of the seine using a tractor placed at the shore, and finally the fish are gathered into the seine’s net.
The final step is where the fish are pulled to the shore using the reel and the fish are transferred to sorting and grading equipment using special hoists.
Since the fish will be in special proximity during the entire process, aerators must be set to full speed to provided adequate amounts of oxygen.
Handling and grading equipment
Handling and grading equipment helps farmers to grade their fish according to their different sizes – up to three different sizes.
They help the farmer to count the number of fish using special counting equipment.
Once graded, the fish will now be ready for transportation, which should be done in special transfer tanks, which are fitted with aerators.
With the everyday advancement in technology, aquaculture tanks for sale increase in their quality and delivery of service to their users.
These tanks are key in ensuring the growth and advancement of aquaculture systems.
Last update on 2020-10-31 / Affiliate links / Images from Amazon Product Advertising API