4" duct to garden hose adapter
thingiverse
I made this adapter to connect my Python water changer system directly to a 4" duct fan. After I am done with my water change it screws right onto the Python and helps dry it out so it doesn't grow mold in the vinyl tube. You will need to buy the duct fan, some 4" duct, and 2 duct clamps to build what I have shown in the picture.
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