I have a T8 ballast that is capable of powering 4 T8 bulbs at i believe 48" lying around my apartment. I was planing on using it (all 4 bulbs at 4ft) for the lights on a 72 bowfront. I want to keep a mix of plants not to demanding (but want to get at least one kind that's redish), and i plan on NOT using CO2 but the tank will be dirted. will this be enough light for the tank? I think from what I seen most 48" bulbs are 32 watts each.