If placed up high enough in your 36 that should work ok. I've never seen a definition of lighting (ie low, moderate, high) equated to a particular wattage. Too many other factors. In a tank that size you can make your adjustments by placing the coral appropriately. I'd put it in somewhere about the middle and watch it for a week or so. If it does well, keep it there. If not, try moving it up.
Just my $.02
Good Luck!