★★★★★
"Old Faithful" in my pond
The salesperson warned me that this aerator would not be as pretty as a fountain. But I like that it looks like Old Faithful and it does double duty of aerating, as well. It does require two people to assemble it, but the instructions were good (written by someone who is a native English speaker) and placement was a breeze. I have it on a timer to shut off during the night to conserve electricity, etc. when aeration is not such an issue. It also makes a pleasant, but rather loud noise, so I like the silence in the evening.