Greenhouses trap sunlight to create a good environment for growing plants and fish. They use solar energy to heat water, which helps maintain the right temperature for plant growth. The light inside the greenhouse is steady, which is good for plants. The system helps control extreme temperatures inside the greenhouse, making it better for growing crops. Sediment from fish tanks can be used as organic fertilizer. Greenhouses are being used more to grow crops all year round, but some struggle with cooling in summer and heating in winter. Different methods are being tested to store solar energy during the day and use it to heat the greenhouse at night.