Fish is one of the main sources of protein. Bangladesh is one of the major fish producing countries in the world. In most cases, farmers follow traditional fish farming methods. They use chemicals as growth promoters or for emergency situations that cause various side effects. Thus, with the increasing demand for fish production as a food source, the knowledge of fish farming system is expected to increase. Fish farming presents various problems, including the problem of dissolved oxygen (DO). These problems can be eliminated by using aeration. In our thesis, we tried to show how to carry out intensive fish farming by aeration process both on-grid and off-grid. We found that if it is possible to maintain the necessary level of Do in the water, the rate of fish production will increase. In our project, we carried out an experiment to estimate the increase in DO level if water is spread in the pond. Aeration not only increases the oxygen level but also removes several harmful elements like ammonia. As the molecular mass of ammonia is lower than the molecular mass of the atmosphere, the aeration process helps dissipate the ammonia gas. We found that it is possible to increase fish production by 200-600% compared to the conventional method. In our work, we derived the formula to estimate the dissolved oxygen and energy required to pump water for aeration in a fish pond. From the perspective of the impact of climate change, Bangladesh is one of the most dangerous countries. Say no to plagiarism. Get Custom Essay on “Why Violent Video Games Should Not Be Banned”?Get Original Essay The situation will further improve due to unplanned and excessive dependence on fossil fuels. In our country, renewable energy currently contributes only 2.89 percent of the total electricity generation. Among all forms of renewable energy sources, solar energy has bright prospects in our country. The government has already set a target to increase the renewable energy generation capacity to 2,829.68 MW by 2021. In our country, so far, solar photovoltaic energy is only used in lighting, fans and rural houses or shops, but is not notable on an industrial scale. But to a large extent we can use it in the agricultural sector and therefore in fish farming. Even less used in irrigation and poultry farming but very limited in fish farming. Currently, farmers rely on 266,000 electric water pumps to irrigate nearly 1.7 million acres of land and 3 million diesel pumps to irrigate 8.4 million acres of land using nearly of a million tonnes of fuel. Aeration can be done in different ways. By using photovoltaic solar energy, this can introduce an economical solution. Rural areas often do not have sufficient electricity supplies and fuel costs are becoming increasingly prohibitive. As the cost of solar panels comes down, in the future every village may be able to install solar panels and produce enough energy for irrigation. From the perspective of the impact of climate change, Bangladesh is one of the most dangerous countries. The situation will become even worse due to unplanned and excessive dependence on fossil fuels. In our country, renewable energy currently contributes only 2.89 percent of productiontotal electricity. Among all forms of renewable energy sources, solar energy has bright prospects in our country. The government has already set a target to increase the renewable energy generation capacity to 2,829.68 MW by 2021. In our country, so far, solar photovoltaic energy is only used in lighting, fans and rural houses or shops, but is not notable on an industrial scale. But to a large extent we can use it in the agricultural sector and therefore in fish farming. Even less used in irrigation and poultry farming but very limited in fish farming. Currently, farmers rely on 266,000 electric water pumps to irrigate nearly 1.7 million acres of land and 0.3 million diesel pumps to irrigate 8.4 million acres of land using almost a million tonnes of fuel. Aeration can be done in different ways. By using photovoltaic solar energy, this can introduce an economical solution. Rural areas often do not have sufficient electricity supplies and fuel costs are becoming increasingly prohibitive. As the cost of solar panels decreases, in the future, every village may be able to install solar panels and produce enough power for irrigation. of the world's leading fish producing country with a total production of 41.34 MT. The figure shows the (average) growth of this sector over the last ten years, which is almost 5.43% and the government is trying to maintain this growth. In Bangladesh, around 50% of farmers gained experience in fish farming from their neighbor and 33% through formal training from different organizations such as NGOs, DoF and BFRI. Most of them use chemicals, artificial waves and water recycling for their cultivation, which is not reliable enough for intensive farming. The figure shows that China is the largest fish producing country with 79,389 tonnes, or almost 38%. of the total world population. Our neighboring country India contributes 11% with a total production of 22,215 MT. Vietnam shows a surprising production of 6,208 MT (3%). Where Bangladesh shares only 2% of the world's population. We therefore have an attractive opportunity to promote this sector. The process of maintaining or increasing the level of water saturation in the artificial and natural environment is called aeration. In this process, the oxygenated water is diversified by the circulation of water around the aerator. This method results in thermal and chemical desertification. The amount of water created by this process helps maintain high oxygen transmission efficiency, as new oxygenated water is replaced with less dissolved oxygenated water. We created an installation with the experimental aim of observing the behavior of oxygen in water. For this experimental purpose, we took 100 l of water in a plastic drum. We used a homemade shower to convert the water into droplets so that the collective surface area can increase, which will consume more oxygen. We circulated the water from two different heights of 1.2 m and 0.6 m to determine whether oxygen remains in contact with the water regardless of whether the DO quickly reaches the saturation level ( 7.5 mg/L). To measure the DO in water, we used a DO meter. The DO water model is the PDO-519 manufactured by Lutron. While taking the data, we also recorded the water temperature shown in the DO meter. The temperature was almost constant in both cases. In our experience, after every 50 L of water circulation, we recorded.