In a tank the size.of a 40 breeder if i wanted to keep a few easier sps corals closer.to the top can i use just t5 like a 6 bulb set of do i need mh combo ..if i need mh is .250 watt to much for.the mh . I dont want led because i dont know nothing about them its gonna be my first reef i will get a bigger tank later but this is gonna be my learning tank.