Are you sure it's the 10" light? The 7 gallon cube is 12" all around.
Duh! You are correct it is the 12" Fugeray, the cube is 30cm about 11.8 inches.
When I had the light on during the dry start it didn't look like it was enough light. Now that it's filled it's looking pretty good. I'm aim toward the mid to high end of medium level lighting once the CO2 gets setup.