plaster stains

Aug 1, 2013
13
most of the bottom of my pool has a light tan stain that brushing doesn't seem to effect,it seemed to get a worse after several days of slamming the pool,is there a certain way i should add the bleach?I have just been pouring it in,and any ideas on removing the stains?
 
You should slowly pour the bleach in front of a return jet and then leave the pump on for an hour so it mixes.

You have to determine what is actually causing the stain before we can suggest how to remove it. Is it organic (does a trichlor puck lighten the stain)? Is it metallic (does a vitamin C tablet lighten the stain)?
 
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