Cloudy water is it my filter?

[Skymarc]

The stains are only dirt stain from last year as I lost the pool at the end of the season.
Im rubbing a chloring puck on it and brush and it helps to remove it.

As for the copper level, its my fault as I use some copper sulphate earlier this season. I always used some the last 3-4 years to control algua before I read on it that its not very good to use. I have plenty here at the feedmill and its cheap. I have stop using it and the copper level will go down in time when I remove some water this fall to close the pool.

I have zero stains from the copper or metal. No green hair neither.
Water is crystal clear and my CHL level is more like 5 ppm when I test it with my k2006 tester. I think the pool store does not test higher than 3.

Liner as a rough texture now, before it was more slippery??

[PoolDoc]

+ The most common cause I've seen for a rough liner is what I've called "sand algae". Under certain conditions, some forms of algae and slime will either secrete tiny calcium domes that adhere to the pool surfaces. You can see some extreme examples here: http://pool9.net/algae-sand/

+ Do NOT rub a trichlor puck on your liner; they are VERY acidic, and low pH will do serious damage to a liner. If you have stains that respond to high chlorine, dose your pool with bleach at night, and let the stains gradually disappear.

[Skymarc]

No slime but just a rough texture.

[PoolDoc]

Look at the pictures of the white or sand colored bumps -- those are the end point residue left after the algae is gone.

[Skymarc]

My k2006 test this am,
FC 2.5
CC 0
PH 7.2
TA 90
CH 90

I added more chlorine and 1 box of borax.
Water is crystal clear.

[PoolDoc]

Looking good.

But if the roughness on your liner is calcium scale it would be better to keep your pH near 7.0, till the roughness is gone.

[Skymarc]

my latest test last night,

FC 4.5
CC 0.5
PH 7.2-7.3
TA 90
CA 90
CYA 45

the box of Borax didn't do very much as I added water and my fill water PH is 6.8 and FC of 2-3 ppm.
did a chock last night and its looking good this am. Very clear.
On the CYA its hard to not see that dot, how far should I be when looking down at it?