I hate those things. They always fail for me. I had a rooster become fixated on the yellow valve stem until he broke it off completely. Usually they get a small piece of debris, food, a feather, whatever around the opening preventing it from closing correctly.
Is yours in direct sunlight? Sometimes algal growth can be sufficient enough to prevent closure and cause it to overflow.
They are great when they work and a pain in the rear when they don't.
Is yours in direct sunlight? Sometimes algal growth can be sufficient enough to prevent closure and cause it to overflow.
They are great when they work and a pain in the rear when they don't.
