calcium hardness/ metal control new to me, do I need them

[karenib]

Thanks Marie. Do you think I should hold on to the bottle of metal control in case I do get staining. The rest of the chemicals are going back to the store

Karen

[mbar]

Yes, I would just hold on to the metal control until you see some stains forming. If you see a stain starting, then take the ph down to 7. - 7.2, and add the metal control. It should lift the stain off.