I have a chem question for you, Richard. I'm doing the ascorbic acid treatment right now. It still has to circulate until tomorrow (Wed) at 6:00 am, then we filter. I added a bottle of sequestrant as per the instructions after adding the acids. Would our makeshift filter catch sequestered metals as well? Doesn't sequestrant make the particles "larger" so a filter can catch them (or is that chelators)?