So I got a great deal on a 40 gallon hex. It is 3 feet wide and 21 inch tall and I would love to have it be a planted tank. I have only done one planted tank before and it is my 10 gallon medium/low light tank. I wanted to do a carpet of micro sword so it looked like grass and some other taller plants that are medium to high light. I have some in mind but before I get too excited I want to see if high light is in my budget. I was looking at some Fluval T5 fixtures that hold 4 bulbs, would I need 4 bulbs or the one that holds two? Also I know I will need a CO2 system so I was going to get gas injection one but since there isn't as much gas exchange because it is a hex could I also have a bubbler for increased oxygen or would that mess up my CO2 system? Any advice would be great because I am new to the planted tank scene and while I love all my other tanks my one little planted is my favorite and I want more.