I'm thinking about doing a small above-ground pond on my front patio but the space is too tight for a cinderblock pond. I got to thinking and thought about using an acrylic tank (probably 60 gallons) and then make it pretty with some wood on the sides. Has anyone done this or even thought about it? Do you guys see any problems with it? Let me know your thoughts. I'm still in the beginning stages of planning so I don't know what I'm going to put in it yet. Thanks for the help guys!