Deadline is September 10th.
The Aquatic Gardeners Association's International Aquascaping Contest has been going on for 21 years now. You may view any year's results here. In addition, you can find 'vintage' live reveals from our conventions when the year and month lined up:
The AGA's 2022 convention will be held September 29-October 2 in Chicago, Illinois, USA. Details and Registration here.