Ideas on removing some stain spots on the liner.

[NUTNDUN]

This was the best opening of the pool in the last 7 years thanks to you guys and TFP. We have a couple of stain spots which I originally thought were organic but the spot I tested did not lighten up when I held a puck over it for a few minutes. So we went to the store last night and got some vitamin C tablets. Got home and crushed about 10 of them up inside a sock and tried it on the one spot. It instantly cleared the spot and it has yet to come back.

I have been doing a lot of reading from treating with AA and sequestration to shocking and vacuuming to waste. Our water is crystal clear and other than the liner being older it is pretty decent for it's age. I have a link below to a few photos on my google photo album to show what the spots look like. We do fill the water from our well which does have trace amounts of iron. I have had the pool at shock level twice in the last year and never had an issue with iron or metal precipitating or discoloring the water.

I was thinking about just putting vitamin C in the sock and swimming around to the different spots and clean each one. Would this be a possibility or am I better off doing the Proteam Metal Magic?

Here is a link to the pics:
Pool Stains - Google Photos

 

[Texas Splash]

I was thinking about just putting vitamin C in the sock and swimming around to the different spots and clean each one. Would this be a possibility or am I better off doing the Proteam Metal Magic?

Hitting the trouble spots with vitamin C is a good idea for immediate results. As for any iron currently in the water, a good sequestrant would be ideal to help keep any more iron from precipitating out to the liner again. Thinking ahead, you might look at methods to pre-filter your well water before it goes into the pool, and consider placing some filtering media in the skimmer to try and capture any iron you can. Lastly, from the chemical side, keep the pH on the lower end of the scale if you can, and if the pool is algae-free, try to keep it that way so you don't have to SLAM. The iron is more likely to precipitate again when the FC is elevated.