I picked up a 50 ft. used siphon for my tank the other day and noticed some kind of fungus buildup in the tube and was just wondering what would be the best way to clean it. So far i have just run some hot water through it for a few min, but I was thinking of running some hydrogen peroxide or salt through it as well. What would you all recommend? Quick answers would be MUCH appreciated because the tank needs to be filled tonight. Thanks, everyone!