Aquarium Light Sizes | Dimensions Guide
It will depend on what kind of lighting you are you using, the kinds of plants are in the aquarium and what fish you have. If you have freshwater plants, 10 to 12 hours of light will be sufficient for them to stay healthy. These should be used on tanks with saltwater corals or live plants. Light Duration People leave aquarium lighting on for different durations. Whatever lights you use, remember that tanks need less light if there are only fish present. Lights for Small Fish Tanks These are known as compact lights. Knowing aquarium light sizes is required if you are interested in buying a fish tank. Regardless of the aquarium light sizes, don’t use them for more than 12 hours. Aquarium light sizes are from 12 to 24 inches. Tropical fish tanks require 12 lighting hours. Other Information Reef tanks need about ten hours of light. Coral reefs need high intensity lights. If the species naturally lives in unlit or murky waters, use less light. For a 20L and 29, the 30” light fixtures are sufficient. The largest is the 48” fixture for 55, 60, 70 and 90 gallon tanks. Leaving light on for longer periods could result in growth of algae. Intense light can increase water temperature too. Although small, they provide extra amounts of light.