Its up to you I didn't even have plants in mine at first I just wanted to make a light that looked cool. and I wanted to see if my lights could grow plants and they could
For my sump I just have a cheap fluorescent with a plant/aquarium bulb I got from Walmart
Thank you, I said I had $40 into them earlier but I don't know what I was thinking that's way off. I probably have like 100 into them. I'm trying to find you some quality lights at a cheap price so hopefully I'll have some links posted for you by this afternoon so you can order them.
Right around 6500 most of that is from the 50w I have on the right side. I'm just trying to figure out what would be best for your tank since its a lot longer than mine and you want the light even throughout the tank and not to be spotty. That's why I like to use the higher powered lights rather than a bunch of little ones.