Stains on new fiberglass pool

TigerGalLE

Member
Jun 10, 2020
22
Upstate South Carolina
Pool Size
18000
Surface
Fiberglass
Chlorine
Salt Water Generator
This is my first year with a fiberglass pool. We left it open because we enjoy looking at it. We don’t have too many trees but we have had some leaves and many bugs and worms. I’ve been running my SWG at night for about 8 hours. My FC usually hangs out around 6-7. My water is balanced otherwise. I have this light brown hue to my pool’s surface. You can see little white circles where worms and bugs have laid before I vacuumed them. Brushing and vacuuming doesn’t remove the stain.
Thoughts?
 

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TigerGalLE

Member
Jun 10, 2020
22
Upstate South Carolina
Pool Size
18000
Surface
Fiberglass
Chlorine
Salt Water Generator
I just rubbed a vit C tablet on it and it works. I guess the treatment for this will be ascorbic acid. How do I prevent It from happening again?
 
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