Random question, Trichlor and CYA levels. Why every use it?

Mr Bruce

TFP Guide
Mar 24, 2014
2,438
Greenville, SC
Water line stain doesn't sound like organic stains to me. Organic stains end up on the bottom of the pool, from leaves and nuts resting on the bottom.
 

melsteph

Active member
Jun 8, 2013
41
East Texas
Water line stain doesn't sound like organic stains to me. Organic stains end up on the bottom of the pool, from leaves and nuts resting on the bottom.
I'm reading threads now, but what should I do for a brownish waterline mark on my tile? Scrubbing with brush helps but I can still see where it was in some spots.
 

melsteph

Active member
Jun 8, 2013
41
East Texas
what does the waterline stain look like?
Not sticky or gummy, light brown. I'll see if I can get it to show on a picture, because our tile also has a tan swirl to it.
This is a new IG pool this summer, so just wondering. Fighting CYA after pool store pucks and shock start up care.