I have a drain that goes to my tub and one that goes to my shower. When I drain the tub I see a slight "bubbling/gurgling" in the drain of the shower. When it is all over there is still plenty of water in the trap of the shower, but I'm curious if this is normal or not. There is no chance for a clog since this is new work, done by a licensed plumber. He indicated that this is fine and normal as the trap is still full.
What say you guys?
What say you guys?