Other waterer spike for pot ease for refill you can use regular PET Bottle 38mm diameter (Nestea ect) from 0.5l to 2l
different for this version is you can slowed the waterflow not get empty if is in pot enoght water
I have parametric version for this spike in openscad (can set some size or options or flow)
if somebody interest let me know
my othert standart verion find here : https://www.prusaprinters.org/prints/60785-pet-bottle-waterer-spike
The author hasn't provided the model origin yet.