09-05-2011, 11:08 AM
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There is no gap--to me
. I like to be able to see through to the back of the tank at one point, as this helps a lot to create a sense of depth. However, one suggestion on this, you might want to switch to plain black for a background. Black construction paper works fine. I think the blue is distracting the eye a bit. Black would really make it disappear and create a perception of infinite space.
The substrate and plants are very well arranged.