Pay close attention to the heat requirements in a reef tanks. It should generally range between seventy two to eighty degrees Fahrenheit. Even so, you must consider the type of reef animals you would want to keep. If you want tropical animals, then choosing the best light source would not be a problem. In summer, your open aquarium might require a fan. This feature would really work to reduce abnormal temperature ranges. To find the best reef aquarium lights, try using the Internet shops. It would be a good idea to make sure that a given site provides product features, descriptions and reviews.