Welcome to our forum.
Well I say its white, its kind of light in color, off white, like a flake. Slimy. It mostly floats along the side. I take a pool net and skim it off. Its not real bad, but enough that I skim it off. I've super chlorinated it twice. I read that article you posted and that was enough for me. I've started the decontamination process. Thank you!
If its organic, you must decontaminate. If its hard and scaley, it may be mineral. Slimy sounds organic to me.
Here's where Spock's Tricorder would sure come in handy!
"It's organic, Jim!" Dr. McCoy
OK I identified the white flake. Its a build up of calcium inside the pipes. Every time I would turn on the pumps I get a new dose of flakes. I took a collection of flakes in a glass of water. Added clorox to it and waited one hour. The flakes were still there. I took another collection of flakes without water and added Mauriac acid to a plastic spoon. In one hour the flakes were gone. I need to lower my Ph for awhile, to rid the buildup.