You should read up on this. It really works great.
If you want something prepackaged, Rootmedic or Pfertz are good options, especially on a small tank.
I am not going to tell you that you have too much light, because I have double that amount over a tank just under twice the size so I'd be a hypocrite.
My tank is very high maintenance, I use pressurized co2, only have a photoperiod of 8 hours per day, have aquasoil, and dose all macro and micronutrients as well as iron and magnesium and potassium in excess (i dose even extra K than the above link calls for) I am dealing with very minor GDA that will pass since the tank is just a month old.
It's a lot of maintenance and tweaking. If thats what you want you can do it, but without a lot of research and effort it won't work out well, especially if you're just using diy co2 (don't know what you're using, just an example) only dosing iron, especially under that light.
If you want to go that route, cool. Just know there is little room for error or slacking off. For a ten gallon tank you could sell the light and get something a lot less powerful and have good results still. I am only using as much light as i am because it was a gift.