Ever have a problem keeping the siphon hose in your tank when draining or filling your tank? I got tired of the hose slipping out and spilling water on the floor, so I did something about it. I went to Lowes and got two 90 degree 1/2" hose barb X 1/2" male NPT adapters and a 1/2" threaded coupling. Screw them together, it makes a "U" shaped fitting. Slip your hose on one side to the sink and a cut piece of hose into the tank. There is is, a no-slip solution to the issue I was having. It cost about $5.