here are a few pics of my tanks. note: these pics are quite old, will try to get new ones asap.
the first is my 10G tank
since this pic another plant was added, and things moved around. also the inhabitants have changed. now it only is home to 2 bloodfin tetras and 5 gold barbs.
this is my 20G long from when i first set it up:

and this was it as of one month ago before tear down....
it was home to 5 tiger barbs and 1 pleco when i first set it up. then it was taken down due to moving and ich outbreak. at that time it was home to 4 neons and 5 cherry barbs.
the 20G will be re-setup by the end of march and will be home to 6 tiger barbs, 4 green tigers, 2 corys, and possibly a red tail shark. the scape will be completely different with no truck (im a truck guy so it was fun having it in there). the rock will all be white, with red and green plant and a large sand stone fake rock in the middle with some sort of cave setup for hiding.