I remixed the original because the holes in the filter-spacer were missing and the box for the water and pump was too small and without a manitance opening for pooring water and measuring the PH- and EC-levels.
Printed with PETG for water resistance.
Tip: The tank can also be coated with epoxy resin for better cleaning and watertightness.
Print list:
Pump: https://www.amazon.de/dp/B0BW33SMVP
Hose: https://www.amazon.de/dp/B075V7ZK5L
Angled tube: https://www.amazon.de/dp/B0B8ZSR135
The author remixed this model.
Holes in the filter-spacer, bigger box for the pump and a cover for the bigger box