Sooo I wana build a self sustaining ecosystem for about 4 tortoises, I had in mind of getting a 90 cm by 90 cm pot fill it with clean solid and then pebels on top and put some marijuana plants in there and some basil maybe mint 2 and lastly letuce and a small water source like a plastic bowl under the soil so they can drink ik ik they don’t drink but why not what u guys think