the tank looks great! I like the scape and choice of plants.
but just so you should know, thats a 9.54g tank, not a 6.6. i saw the spec out of the corner of my eye, and i was like "wait... that sounds bigger than my 10g!" so i did the cubic inches to gallons conversion, and yours is 9.54g, or 2204 cubic inches. A standard 10g is 2400 cubic inches.
The tank is marketed as a 6.6 gallon tank. Maybe the dimensions are wrong?