So I had this awesome idea yesterday about a pond, but not any pond, a indoor pond! I thought if I bought this container that is 36in/17in/7in and is clear and put a filter on it with a thin layer of sand and some rocks I could literally put it on my desk and look into it! BUT! I can't get ahead of myself......... Could I put like 2 fancy goldfish in their because they enjoy swimming across, not up and down right? Let me know what you guys think!