Off-topic DIY / Version 1
Aquarium biofilter
A PVC-U filter and technical-shaft concept with printable drawing and DXF data.
Concept
A compact 130 × 130 × 490 mm internal filter/technical shaft made from 3 mm PVC-U. The planning drawing separates raw-water intake, media area and pump compartment and includes an optional sealed route for a CO₂ tube.
Downloads
This is still a planning design; pump fit, flow and service access need to be checked on the actual aquarium.