When I flush my upstairs toilet it fills the bowl like normal but then after maybe 10 minutes the water level drops down very low like you normally see on windy days. Hope you know what I mean. Lol
I checked the hose like you said and also cleaned off the flapper. I also adjusted the water level in the tank so it was below the top of the hose tube. Why does the water level keep dropping? If there is some sort of leak do I have to worry about water damage or does it just leak down into the pipe?
The other toilets in the house are fine.