Need advice on lighting. I am upgrading to a 125 G (6ft long) aquarium. I have mbuna African cichlids and no plants but a few java fern. Now my question is I have the option since my friend is an electrician and will hook me up to get a T5 ballast for 2 bulbs or a T5 for 4 bulbs? It will be a DIY light fixture inside of a canopy. Bulbs I will purchase at a LFS, but wiring, caps ballast etc will be us. Should I do 2 bulbs or 4 and what length? 36" or 48"?