Green Hair Problem After Using Bioguard Smart Shock

[PoolDoc]

It's possible -- even likely --that you have BOTH iron and copper in your pool. Brown stains ARE iron (or if dark coffee brown, manganese, but that's unlikely unless you have well water).

If you keep the pH above 7, it's unlikely you are dissolving copper into the pool. But, iron's another matter. Is your pool water exposed to iron or steel anywhere?

[SnoopysGirl]

It's possible -- even likely --that you have BOTH iron and copper in your pool. Brown stains ARE iron (or if dark coffee brown, manganese, but that's unlikely unless you have well water).

If you keep the pH above 7, it's unlikely you are dissolving copper into the pool. But, iron's another matter. Is your pool water exposed to iron or steel anywhere?

Well, I HAD thought that possibly iron was entering the pool via our city water (we've had drought conditions this year), but now I am thinking that perhaps there is an exposed screw or something else that might be causing the staining. Earlier in the summer I noticed that there was some staining under one of the skimmer intakes. Also, around the steps there are some darker reddish spots (like rust), and those could be coming from something near the steps. Thanks for the suggestion - I'll investigate a little bit further and see if I can find the source.

[PoolDoc]

OK. Let us know what you find.