Thanks.... I will always pay attention to them, i watch them every single day and before i go to bed lol...Look great, be careful with 2 males and 1 female combo. Black rays are EXTREMELY hard lovers and a single female will receive A LOT of attention. 4 foot width is better but I know a lot of people do 3 foot, but it means you have to pay close attention to the male/female ratio.
Best of luck on your black ray adventure!!