Had a small hexagon kid's aquarium hanging around.
12/12 from seed in rockwool.
Once I saw a root, I put this together.
Drakensburg Gold (Malberry)
I used this small air pump in a small wide mouth masson jar
POPETPOP Air Pump Aquarium USB Air Pump Ultra Silent
a Keurig cup for the net pot.
a 40mm knockout punch to cut a hole in the masson jar lid.
(this here is a 30mm, but I used a 40mm for a perfect fit)
and a sheet metal punch and grommet for the air line
Now all I have to do is wait.