I purchased it second hand, with no identifying label. But yes, it does appear to be an AE made unit. Some minor difference from what I see on the website, so probably just an older design. I've had to remove the masterflex from the reactor - needs a higher flow than it can manage. In about six weeks I have reduced nitrates from 40 plus (maybe even approaching 80 - my eyes don't resolve the colors all that well) down to about 5. I'm going to dial the reactor back a bit to try to stay at that level.