About this item Work best on 10 gallon tanks with 20 inches long; with two extendable brackets, this light also fits for fish tank from18 inch to 24 inch long Min size after assembled with dockig brackets: 18.5” L x 2.7” W, Light body without docking brackets: 17” L x 2.7” W. Tank thickness: No limit to rim size Configuration: Total 42 LEDs, 30 pcs 6500K white LED, 6pcs blue LED, 3 pcs pink LED, 3 pcs Green LED Mode: all lights on and all lights off; no timer; light brightness is not adjustable Super bright and energy efficient LEDs, suitable for all freshwater; NOTE：LIGHT IS NOT WATERPROOF,KEEP THE LIGHT AWAY FROM THE SPLASHING WATER › See more product details