I use these in my garden pretty heavily, the default size is good for transplanting seedlings before they're ready for the garden. The model does scale up and quite well.
I do recommend making sure your cooling fan is on by layer 2 or 3, as there are a lot of overhangs in the drainage chamber.
For outdoor uses you should print this in PETG or ASA if possible. PLA should be fine for indoor usage.
The author marked this model as their own original creation.