Help on LED lighting

[Madmax275]

I am looking to get Galaxyhydro LED Aquarium Lighting but do not know if I can use 2 or do I need 4 fixture for a 120 gallon tank

 

[Tristan]

Instead of getting the Galaxyhydro, get the HobbieBug Euphotica LED 16" Dimmable. If you are buying it on amazon it is cheaper. The two lights are the same but the HobbieBug is cheaper. There is also another version of the 16" that has a timer and I think you are Able to ramp up and ramp down the brightness.

For a 120g reef you should get 3 or 4 for better coverage. 2 is better if you had a 90 or 75.