What size tubing fits an auto siphon? My tubing is getting nasty and I don't want to risk infections. There is no lettering on the tubing, so I am not sure of the size.
I can't be 100% sure you have to same auto siphon I do but mine takes 3/8" tubing. Either way just take yours to Lowes and you can fit the tubing there.
Depends on which size autosiphon you have. I have the 1/2" version which fites 1/2" tubing just fine. The one I had before was a little loose with 3/8" tubing so you may want to go with 5/16" (Just run it under hot water first to make it stretch easier)
I currently use 3/8" silicone tubing on my 1/2" racking cane, stretches over it nicely. I'll order some 1/2" silicone someday maybe, would make transfer faster.