So here is my alligator snapper set up. The tank itself is 18x18x24. It is stocked with water lettuce, duck weed, hornwort, and bladderwort. Plus Gambusia and feeder guppies. In the pots there are several different species of sundew and a cat tail, the peat moss mix that they are planted in helps to keep the water acidic. And I have some red mangroves rooting in the tank before they get moved to another location.