Ok Im having an issue and I want to try a sitz bath but I am confused???? I dont want to buy the kit when I can just use my tub. All the descriptions say just use warm water???? Is there something else I am suppose to ad to the water for certain conditions?? I have never done a sitz bath before and after all my reasearch I am getting confused... Do I use sea salt/epsom salt, saline, or just water... This is so frustrating... What to do????