I normally pour the bleach in over the jets, but in the past I've had other people pour it in for me when I'm away. This stain was here last year and I'm not really too worried about it as the liner is nearing 15 years old. This stain goes from the top to the bottom in the deep ind and there is a distinct outline from where it is not stained.
I'm assuming that its bleach related but thought I'd throw it out here.
I'm assuming that its bleach related but thought I'd throw it out here.