That looks like it is working pretty well.
The difference between the fluorescent was that big huh?
I found the compatibility chart for the 45cm AQUASKY if it helps:
*AQUASKY 451 is compatible with ADA Cube Garden / Cube Glass in the following sizes:
W45 x D24 x H16 (cm) glass thickness 5mm
W45 x D24 x H30 (cm) glass thickness 5mm
W45 x D27 x H30 (cm) glass thickness 5mm
I believe the main difference between the Do!Aqua tanks and the Cube Garden is the glass, Cube Garden tanks use 5 sided LIG (Low Iron Glass) while Do!Aqua use regular (green) glass.