So the pool is about 1 year old now. I have been maintaining to TFP standards since the beginning. I noticed at the end of last summer there was one brown spot on the bottom of the pool that would not sweep away. I did not do anything about it. Now they are all over the pool. These brown stains on the pebble tec. What started as one brown stain, is now many. I brush several times a week, and these stains are not going anywhere. The brush does not phase them. ... Here are my numbers:
FC ..........10 ( I just turned the SWG down from 40% to 20% to lower this to 5)
CC............ 0
CYA.......... 60
CH............ 100
TA.............. 80
PH............. 8 + (my gauge only goes up to 8) I have trouble keeping the PH below bright pink 8.0.. I use Muriatic Acid to lower when needed.
Any recommendations on how to understand what these stains are and how to treat them? Or at least get them to stop spreading?
PS.. I do not have any leaves in the pool. There are no trees in my yard, so I know it is not leaf stains.
FC ..........10 ( I just turned the SWG down from 40% to 20% to lower this to 5)
CC............ 0
CYA.......... 60
CH............ 100
TA.............. 80
PH............. 8 + (my gauge only goes up to 8) I have trouble keeping the PH below bright pink 8.0.. I use Muriatic Acid to lower when needed.
Any recommendations on how to understand what these stains are and how to treat them? Or at least get them to stop spreading?
PS.. I do not have any leaves in the pool. There are no trees in my yard, so I know it is not leaf stains.