I am looking to change my lighting on my 500 gallon tank. I plan on keeping softies and LPS mostly. My tank is 96 inches long by 40 wide and 30 inches deep. Getting coverage for the 40 width is really giving me pause. I don't want to spend a fortune on radion to get the coverage I would need. I was thinking of giving the viparspectra 300 watt a look. I was thinking if I did 4 of them with the long side running front to back to help cover the 40 inches in that direction and then I would mount them every 2 feet in my canopy. One issue is that I only have about 9 or 10 inches of mounting height above the water in my cabopy. That makes me nervous about hot spots in the coverage at that height. I've been running 4x400 watt MH but wanna change over to led for the heat and electricity savings. Does anyone have any recommendations or a similar size tank that they are running led on?