![]() Blue light also looks very appealing and can give your tank an under-the-sea vibe. Plants need blue light to survive, as it provides them with a lot of energy for photosynthesis. Blue light is one color on the spectrum, and it is a high energy type of light. When all seven colors are present, the light looks like regular daylight, called white light. The light spectrum, otherwise known as visible light, is made up of seven colors. However, if you have any live plants in your tank, you’ll need 8 to 12 hours a day of good lighting. ![]() Therefore, if you don’t have any live plants in your tank, you can use less lighting, which might be beneficial if you have algae problems. Do Fish-Only Tanks Require Less Lighting Than Planted Tanks?įish don’t have a biological need for light, but plants can’t survive without it. Starving plants are likely to die, clog up your filters, and poison your aquarium. Chlorophyll is fundamental to photosynthesis, and without it, plants will starve. Most plants use blue light to produce chlorophyll, the green pigments found in plant cells. Plants need blue and red light to remain healthy.
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