I need some advice on what my lighting schedule should be.  I heard Dustin say that he has his on for as little as 6 hours.  I have a 120 Gallon tank, heavily planted. It is only 48in wide, so it is fairly deep.  I don't use dirt and have a little laterite in my substrate, but I use all of the flourish fertilizers weekly.  My fixture is a 4 bulb t5 with 6,700K bulbs.  Lately I have been doing 6hrs of just the front two bulbs, and then 6 hrs of all four.  I am having a fairly bad algae problem.  Its not so much on the glass, nor is it bba (which I was able to eliminate once I got rid of extra C02).  It is covering my beautiful anubias and ludwigia!!  If this were your tank, what would you have as your lighting schedule.