Sparkling Blue Water but Brown on the Bottom

[RachelA]

I have an 20x36 in ground salt water pool. I finally got the water to be blue but there is a brown film that I can't seem to get rid of any ideas?

 

[jblizzle]

Welcome to TFP!!!

Looks like metal staining ... possibly combined with calcium scaling.
Do the stains feel different than the rest of the pool?

Try putting a vitamin C tablet on the stain for a few minutes and see if that does anything.

 

[Casey]

Looks like either organic staining or metal staining. You can check in 2 ways. If it's organic, a puck will lift the stain. If it's metal, a Vit C tablet will lift it.

Did you bring the pool back from a swamp recently? What is your fill water? Well or City?

 

[RachelA]

I did recently bring it back from the swamp. Fill water is city. Tried the Vitamin C tablet & it didn't work.

 

[jblizzle]

Do they feel different?
Trying a trichlor tablet for a few minutes.