The Marineland® Fully Adjustable Essential LED Light for 20 gallon aquariums fits 24-30 inch tanks. It includes 4 white and 1 blue LED PODs for customization across your fish tank. Move or add PODs to highlight key areas in your aquarium while also controlling intensity. Use the color recommendations on packaging to create different assortments, like color-enhancing, color-changing and GloFish® looks. The 20 gallon light fits up to 14 LED PODs, allowing you the flexibility to create an aquarium environment unique to your personal style.