Re: 2x 48" Ray 2 DS...too much?
Looks like you'll be in the high light camp. With 2 lights, you'll have areas where there will be overlap. That's good because the spread of a single fixture probably wouldn't cut it and hanging the light might not give you enough par at the lowest level of substrate. My friend has the ray 2 and it looks good but almost all of his plants grow in the same shade of green. If you are looking for contrasting colors, the ray 2 might not be the best choice.