If you are getting into planted tanks I'd really suggest reading up on PlantedTank.net
I can tell you that if you are planting a 55 gallon, you will definitely need adequate light to penetrate the depth of the water. Personally, I am trying out a smaller tank first to get my feet wet -- pun intended -- with live plants. The entry cost into nano planting is a lot less than fully setting up a 55 when you have not done it before, but the concepts will still be the same.
Last edited by TexasCichlid; 07-13-2011 at 04:13 PM.