The layout of a tank like that has to beam out rest. That is to achieve by limiting the number of plants species. Experience for years and years within our league have proved that ca one species of plant a one dm length of the frontpane generally is effective. As colorful and with marked here one used Amannia gracilis on the left and Alternathera reineckii cardinalis on the right. Diagonal lines going out from the middle to the corners in top strengthen the effect of depth. The walls are grown over with Anubias nana on the left and Javamoss (Vesicularia dubyana) on the right. Putting in some so called straatjes ( groups of plants that are wide in the front and become more narrow little by little and end in a point) bring more depth effect.