Lasted 3 + years so far & going stong.
Pros: strong durable dependable.
Cons: a little noisy but that comes with any powerful air supply.
The AP-40 Lasted 3 + years so far and is going stong. Also bought an AP-60 to aerate my ponds two years ago and it is outside & also doing well. Both are very powerful. Have them hooked to a battery b...