Will need more info about tank size .. there’s so many options .. t5 , LED , metal halides....?
I personally run 3 Chinese black boxes (LED ) over my 90g mixed reef .. I’m very pleased with them ..
Look at Ebay for black box leds. Probably the most reputable and inexpensive led fixture is from Mars Aqua. Two of their small fixtures at $100 each or one 32" fixture and you can grow any coral you want.