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 30 inch by 12 inch aquariums (common sizes 20 gallon long, 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.