This is a cress seed planter. It consists of two parts: a pot and a sieve.

You should print the pot with thick walls, as it has to be somewhat watertight. 5 perimeters should be enough. The bottom an top layers should also be 5 at minimum.

Further configuration for the sieve:

The sieve is printed by configuring zero top and bottom layers, but 5 perimeters. Then set the infill to “Grid” and the fill desity to 60% (more density = smaller sieve). For cress a density of 55-60 is recommended.