I want to clean a stained porcelain toilet bowl. It feels like a small crusty coral reef right at the bottom in the water, visible to anyone looking down. I suspect its like calcium/lime but this is not normally a problem in our area.
Plain scrubbing with a brush has made no difference. I've tried a pot-scrubbing pad while wearing gloves but its minimal effect.
I want to soak the area in something like CLR rust remover, but the water is diluting it and minimising the effect, and I don't want to tip whole bottles of the stuff in to increase the concentration.
What can I do to push the water in the trap down without refilling the bowl?
Is scooping it out or using some kind of pump really the only option ?
I am aware the water trap keeps sewer smells down, this would only be for a couple of hours perhaps, until the stain dissolves or softens.