Newbie metal issues - manganese and Bioguard Pool Magnet

[doggie]

Do you have a pool heater? That's where our metals come from. We treated with Natural Chemistry Metal Free then have continued on a maintenance dose each week. That cured our staining problem.

Let's see what Marie says. She's the forum expert on metals and staining

[kearpaul]

Thanks for replying doggie. But no heater here at all.

Best,
Paul