cloning lights

I have a small height with which to keep my cuttings and am wondering what the best light to use would be? I don't think I'll be able to use t5 tubes as I read that you have to keep them quit far away? My current thinking is using a standard fluoro tube, does anyone know what wattage I should use for say 6-8 cuttings? I understand these can be kept about 3 inches away, is this right? I currently have a spare blue 125w cfl, would this be ok or is it too powerful?

Thanks!

I use my 2 ft. twin t-5 and keep the distance no closer than 8 in. until my girls get 5 sets high. The t-5 then gets lowered to 6 in. once the sets reach 7-10 I go to main light ... 400w mh