I need help deciding what lighting to use for my new 5 foot reef. I am thinking AI Primes - How many would I need to cover the spread of a 5 foot thank thats 18 inches deep? I know they have a spread of 24inches so would 2 be enough or do I need 3?
Also what are some other options rather than the AI primes?
Also what are some other options rather than the AI primes?

