1. What is light? The importance of light and aquatic plants and marine life

Light can be said to be an energy. Aquatic plants use light energy, carbon dioxide and water for photosynthetic action, and the production of nutrients such as glucose is required for the supply of water, and the by-product is oxygen. This oxygen is sufficient to provide the fish's breathing needs. Similarly, some algae or so-called symbiotic algae (Zooxanthellae) in seawater biological tanks grow by light, and provide soft organisms (corals, invertebrates) and the like. Therefore, whether water plants or seawater biological water tanks need to be artificially provided with appropriate amount of carbon dioxide (CO2) combined with light energy for photosynthesis, symbiotic algae and plants to breed or grow, fish or seawater organisms or breathing or feeding algae, light Can be passed on to form a symbiotic food chain.
Conversely, if plants or algae lack light energy, they will fade or die directly and die. In contrast, fish or seawater creatures have no attachment and are inevitably unable to escape the fate of death. Complete water grass or seawater bio-ecological tanks cannot be formed.

2. Understanding of natural light sources and artificial light sources

The light source of nature takes sunlight. Therefore, both land and marine life can absorb this light energy and pass it along with the food chain to survive and grow. In the same way, the ecological tank that creates a tank of aquatic plants or seawater creatures will inevitably lack the acquisition of light energy. However, the use of natural light sources in the aquarium at home is bound to be difficult. The source of sunlight is all-encompassing. Scientists can extract visible light such as red, orange, yellow, green, blue, sputum, and ultraviolet light from the spectrum of sunlight. The sun still has infrared light, ultraviolet light, X-ray, and thunder. Other invisible light that is invisible to the naked eye, such as light. Does the plant in nature receive the sun's light (visible and invisible) whether it is received by land or sea? Or the hypothesis that the plant has its own mechanism to eliminate other unnecessary light sources and to study or establish a certain part.
But science is changing with each passing day. Scientists analyze useful light sources from the source of continuous sunlight, and produce solar tubes, plant tubes, strong photosynthetic tubes, full-spectrum tubes, soft tubes, and crawler tubes. UV-cut lamps, fluorescent tubes such as PL tubes, and artificial light sources such as mercury lamps. Although the ecological tank system of aquatic plants or seawater organisms mimics the epitome of the natural ecology, it is only a simulation, and it is difficult to equate with the real image.