Catfish tube

thingiverse

If you're in need of tubes for your catfish, simply printing them is the way to go.\nTwo types are available: open tubes and one-way tubes with closed ends.\nThe model measures approximately 40mm in diameter and 110mm in length - feel free to scale it up or down as you see fit.\nBe aware that printing with plastic matters, especially when using a material like PLA, which has a density similar to water, causing it to float.\nTo keep it submerged, add weight with a stone or some other heavy object, particularly when opting for infill that leaves a lot of air inside the part.