by the way meandthetanks what are the specs of the tank (that can make a difference) also after you deal with lighting your going to have to look at plants that don't mind lower temps. also here is a list over at TPT (the planted tank) of alot of low light plants to give you some starting point. just be warned you will really have to look at the temps thay survive at though.
excellent list low light plants
4 watts over a 55!!! that really is way to little light i'm surprised your plants are doing ok so far, good to hear that your getting the hood up and running
ahahaha, oops total typo. Not even sure you can buy a 4watt bulb, but it's actually a 40 watt t8 aquaglo bulb from Hagen in mine. :grinno: