Hello
From time to time, at 1 or 2 corner slots of my pool, there was a small area of "light green" blur or stain right on the surface of the vinyl, I don't know what it is, or anything algae related. Every time I used a pool-brush to wipe it off.
Everything else is fine, the water is clean and blue, latest test result is below:
FC: 5
PH: 7.5
TA: 70
Calcium Hardness: 80
CYA: 50
Thanks.
Kevin
From time to time, at 1 or 2 corner slots of my pool, there was a small area of "light green" blur or stain right on the surface of the vinyl, I don't know what it is, or anything algae related. Every time I used a pool-brush to wipe it off.
Everything else is fine, the water is clean and blue, latest test result is below:
FC: 5
PH: 7.5
TA: 70
Calcium Hardness: 80
CYA: 50
Thanks.
Kevin