I always had my lights set so that I was getting 250 par on my torch corals. But I always had a hot spot in the middle that torches didn't do well. That was around 275. I asked a couple different people ( a couple coral vendors too) I know that always seemed to have nice torch growth and they seemed to average 170- 200 par was their sweet spot. While one of my friends said 230-240 was his.
I dropped mine down to about 175- 185 across the center of my tank.