FishBeard
New member
so if the leds go inside the hood, u dont need optics ?
The opposite. Think of optics like a focusing element. The farther from your tank, the narrower of a light beam you want to get the light in your tank. The closer you are, the wider an angle you want. Since most LEDs have a beam angle between 90 and 130 degrees, they work just fine with no optics closer tithe water surface.