So true... no two are exactly the same. You shouldn't suffer from tank envy, Dflo... lol! Tanks are always "works in progress". Even if you don't do anything to them, they are constantly evolving into something different than what they were a year ago, a month ago, or even a day ago. Some of the changes are so subtle, you may not even notice them for awhile. Then one day you're like... where did that come from, or when did that happen? While the hobby is fascinating on it's own, it's the little surprises that make it all the more exciting! I know I'm preaching to he choir, because you already know this...