Tetra® LED Hood makes an attractive and functional canopy for your aquarium. The low-profile black hood lends your aquarium a sleek appearance, and the hidden, energy-efficient LEDs inside create a natural daylight shimmer effect underwater. Cutouts in back of the hood fit a variety of filter sizes so you can customize your fish tank as needed. Hinged for easy opening and closing. Tetra LED Hoods are available in a range of sizes to fit most rectangular tanks. This aquarium hood fits most 20 - 30 inch by 10 - 12 inch aquariums (common sizes 10 gallon, 20 gallon high & long, 26 gallon extra high, 29 gallon and 37 gallon). Small aquariums are a great way to get started in the freshwater fishkeeping hobby, and with any new hobby involving living creatures, it is always best to learn as much as you can. When buying fish, ask your retailer for guidance in choosing the right fish for your size aquarium. Since 1951, Tetra has developed the world’s most comprehensive body of fish food knowledge, and fishkeeping enthusiasts have looked to the brand for products and solutions that add ease and beauty to their home. Whether you're an experienced hobbyist or just starting out, Tetra has everything you need – from a large variety of quality fish food and innovative equipment to test kits and decor. AQUARIUM HOOD WITH LEDS: Low-profile, hinged hood houses white LED lights that create a natural underwater shimmer effect. ENERGY EFFICIENT: Built-in LEDs – no bulbs to replace. FILTER COMPATIBLE: Cutouts in the back of the hood can accommodate a variety of filters. RANGE OF SIZES: Tetra LED Hoods are available in multiple sizes to accommodate most rectangular tanks. SIZE: Tetra LED Hood 20" measures 20 inches wide x 10 inches deep, Tetra LED Hood 24" measures 24 inches wide x 12 inches deep ,Tetra LED Hood 30" measures 30 inches wide by 12 inches deep.