I've had dwarf water lettuce in my 16g for quite a while...green, long roots, multiplying. Late last week I noticed some BBA on a few other plants in the tank. Cut back on light hours, although the tank is across the room from a southeast facing window so it still gets plenty of light. I started spot treating with hydrogen peroxide, finally got some Excel and switched to that. I also use Flourish Comp and API Leaf Zone. The other plants in the tank look fine but my dwarf water lettuce is getting progressively worse...yellow and brown leaves and some melt. Nothing else has changed in the tank. Is this happening because of the increased ferts? I just love the plant in this tank and would really hate to lose it 
