evaDsIcixelsiD
Fish Fanatic
Well nidge...One unnit i think costs around 15 dollars...but inorder to be able to use them, you need the starter kit which comes with the box that you plug them all into. And that is 40 bucks. You can also buy led modules for it...i currently have 2 lasers and a blue led in my tank. They are amazing at night. Especially if you have the led pointing out of your tank, cause if a fish swims bye it projects the image of the fish onto the wall. So much fun 
