don't scare me guys, I just bought a h. magnifica. The lfs guy which is my friend and doesn't do things for profit, told me they are not hat difficult and that he has kept many with good results.
You just need to get a healthy one that was shipped right he said. The magnifica he sold me had been in his store for 1 week, arrived healthy and remained visibly healthy, he told me that it even ate flake food when he was feeding the fish.
I am keeping it with t5 at the topmost part of the tank, so far it looks really good and my ocellaris love it.
I have 8x39 t5 with no individual reflectors, but they are very close together.
I also own 2 bta in the same tank, and they love the conditions, and the light is bright enough, one moved to the middle-bottom cuz the light was to bright, and the other one remain on the top but partially hidden, as if to much light for it.