It would probably put you into the Low Light spectrum. It is possible to de-rim your tank ... But it might be easier to sell it and use the hood that came with the tank. I haven't derimmed, but club members have. No guarantees from me.
I use two small u shaped screw in CFLs for my shrimp 10g. It grows plenty of plants. DHG is not an easy plant. You probably can't grow it without better lighting and CO2
If you want to keep it , you might try adapting it or cut out a small piece of frame. I use an LED
fixture on my other 10g. It works fine.
Mine have black sand.
Two 6,500K CFLs
Seachem Flourish Comprehensive and
Seachem Excel 1x weekly after PWCs.
DIY Root Caps as needed.