Holder and modules is mainly focused on EHEIM products (skim 350, AutoFeeder+, pHcontrol+e, Jäger or thermocontrol +) You can simple print only what you really need. For fixing additional accessorises you can use small pins what i already include in models.

Print models with PETG 30% infill, 0.4mm nozzle. (PLA in my aquarium slightly changed color)

Color what is fit in EHEIM coloring (not on picture)

PLA [https://www.prusa3d.com/cs/produkt/prusament-pla-gentleman-s-grey-1kg/](https://www.prusa3d.com/cs/produkt/prusament-pla-gentleman-s-grey-1kg/)

PETG [https://www.prusa3d.com/cs/produkt/prusament-petg-anthracite-grey-1kg/](https://www.prusa3d.com/cs/produkt/prusament-petg-anthracite-grey-1kg/)  TOP

PETG [https://www.prusa3d.com/cs/produkt/prusament-petg-ocean-blue-1kg/](https://www.prusa3d.com/cs/produkt/prusament-petg-ocean-blue-1kg/)