For starters, I recommend that you put out a dynamic saturating color that you can conduct yourself as a more "realistic" background during the process. Then it's time to start putting out the dimensions for the aquarium should behave in a geogramatiskt and proper manner in which to create this professional look where the measurements are considered more realistic (Although you are not my measure it in terms of its bottom). When midges are exposed, it is time to "paint" the aquarium, this is done with white paint, layer should have a transparent blendingmode (I used traditional "overlay") and its opacity should be reduced around 50% to create this transparent glass effect.
( hi-res )