Small tanks can be impactful too

A simple 9 gallon tank above. The tank uses finely textured stem plants (Ludwigia arcuata, hemianthus glomeratus) and mosses to give a sense of scale even in a smaller tank.

The filter inlets and outlets are hidden behind the stone on the left to give the landscape a clean finish (you can see the pipework at the top left of the tank).

The combination of a rimless tank, a slim light fixture and the planned hidden filter inlets/outlets allows a photographic presentation of the tank at all times.

A 10 gallon aquarium by Cory Hopkins. You don't need a large planted tank to make a big impact. Often, concentrating effort and money into a smaller space will result in a better set-up. A smaller planted tank also encourages experimentation and learning as the cost of failure is low.

A planted tank that is only 7 gallons (18"x11"x7.5") expertly scaped by Jeff Miotke. A testament that focused effort in a small setup can produce great results. Read his full journal and see his progression pics here.