I wanted to build an automatic watering system for my plants but didn’t want to buy a halo, so I designed my own version. Inner diameter is 150mm

You can adapt the nipple size to fit your specific hose diameter. I use 16/12 flex hose

I recommend printing it in PETG, as it is more chemically stable in water.

Print Settings

Material: PETG (recommended)

Layer height: 0.16 mm

Wall thickness: 2 loops

Supports: No supports required (only for Nipple)

Special settings: Avoid crossing walls

I recommend using some kind of flow control. I use Flow Control from Dario A. R..