FAAO:
Both your tanks are amazingly beautiful! 5 stars!
I especially admire the fact that you have created so much of a feeling of space/depth in a tank that is smaller than a 60-P, without use of extreme sloping from front to back. A few questions if you don't mind.
1) Do you have a rule of thumb on where put the tree in the front to back dimension to achieve the best sense of depth?
2) I am also amazed how clear the water is with a simple HOB filter. What do you use for filter media?
3) How often and how short to you trim the "grass" in the foreground.