I am wondering what range of lighting is acceptable for trachyphyllia geoffroyi. I have collected several specimens from different lighting conditions. I am keeping mine on the sandbed under dual 400w ushio 20k+ bulbs and one 250w reeflux 10k. I have the 250w off for now until the corals adjust. I had to turn down my flow quite a bit too. Flow is achieved from two mp40w and two tunze 6100. Tank is 48"x24"x23".

