I'll admit, the stream is for me. However, my plan is to put it in the back out of the way. As far as the surface area of the enclosure, I'll have about 75% of a ten gallons bottom surface dedicated to the water area and nearly two 10 ten gallons worth of surface area for the land section. This is above and beyond what anyone I've seen has recommended for two tigers, so I figured a small stream would be alright.

As I have it imagined in my head, it will only be about 2 inches wide at the most. We all know how these projects quickly deviate from what's planned to what we actually end up creating though.