Natural sunlight is best, but it is not always available. Therefore, artificial aquarium lights will have to do the job. Try to buy a light with Kelvin ratings between 5000k and 10000k. This will make the aquarium water appear to be crystal clear. If that is not possible, just buy the brightest light you can afford. We at Aquatic Arts, carry a number of high-quality aquarium lights that you can choose from. You can also buy these lights using our search engine. It is quite easy and it is 100% safe.