Remix of Cleito XXLtank by SteffenLL (thank you!!!!!), to replace smashed glass tank on original model Cleito.
I printed in a transparent PLA+ that gives a "glass-like" finish. If you have a material that is particularly "runny" in your stock, print with this.

Slicer settings are probably important if you care for airtightness.
I sliced with Cura 5.2.1, 0.2mm quality, ensuring z-seam was aligned in one place. 100% infill, I got 2 walls and a solid infill, and it came out 3 layers thick.
Printed with 0.4mm Nozzle on Ender 3 v2.