well when you say all types of coral. im guessing softies,LPS,SPS...so on that route i would suggest T5's or MH and other lights for actinics...i have a 20L that has all types of corals in it. i am using 2 VHO bulbs for actinics and a 70W MH 10K...it really is up to you. but i would spend the money on the lights, cause for corals thats a biggie...again i would look into T5's and or MH...hope that helped