consider using wier from the magnetic steering of a zip/mini rc car caz thers barely aney room in the tank. that wier is as thin as a hair. thats what i used for the back of my tank in thred WA LA, you know where the red lights are and i used serfs mounted LEDs ther much smaller ther the bulb shaped LEDs but if you can afford the room it would be beder 2 use bulb shaped LED caz it might b brighter and give a cooler affect