sorry I think I should of made my point a bit clear, 6000K is able to keep coral, but at the same time because it is favour in red and green, it would also promote unwanted algae grow even more. As far as for fixtures, I would suggest to research first before you make your choice, especially the cost and differences on different LED
chips. How much control you looking for over your fixtures and how much you are willing to pay for. brand name products using higher quality materials but will cost range from 399 to over 1k depend on the size of your tank. Chinese brand LED
can go from $120 to $500 depend on the brand of LED
they use, color they use and also the functions they add to the fixtures.