I think your privacy settings are too high, facebook link doesn't work. Image links also don't work. This isn't a vbulletin forum I don't think, your best bet is to upload to imgur or the like and code the image links into the post.
Also, CLR probably wouldn't be the best product for descaling. It's not an approved food grade chemical.
Using citric acid is probably the cheapest and easiest method for making up mass amounts of descaling solution (required for soaking complete boilers and parts).