Currently I have 2 xr15's fixed to the front of a 4 bulb odyssea fixture. It works great but the light is a little uneven since all 4 t5 bulbs are towards the back of my tank. Would I be better off getting 2 dual fixtures and fitting the LEDs in between them?
I can't see the Amazon link but your definitely going to get a more even look by splitting the bulbs up. I don't know if it's worth the investment or not for you but it would probably be a significant difference for the lighting in the tank.