I just had my pool plaster redone and I have some stains in different parts of my pool, I have tried brushing and it will not come off. My pool has been plastered for two weeks now. I have not ran my heat at all and just put my pool sweep in for the first time yesterday. My ph has been high since the plaster job around 8.0 I managed to get it down a bit. My calcium level is where it should be around 250. My cholrine level has been low, I just got it up to about a free cholrine level 3.00 yesterday. Not sure if my stains are organic or metal stains. Any help would be appreciated. I put a lime and a chorline tablet on two different stains and did not see either of them dis appear or lighten. Attached are some pics. Do you think these stains will go away on their own with chorline now in the pool cause I did not have any free chorline in the pool until now.[attachment=0:3v7ah2au]Pool 3.jpg[/attachment:3v7ah2au] Here is a picture of my steps