Yesterday I had my pool professionally closed and the mesh winter cover installed. The guy who did the closing recommends that I raise my water level back up to 3-4 inches below my skimmers. The reasoning being to prevent the mesh cover from stretching too much under the weight of all of the snow we get here in MN. Currently the water level is just below the returns.
My concern about adding water to the pool is that my fill water has high TA (around 225ppm). Currently, my TA is 80 ppm which is the "sweet spot" that keeps my pH very stable. In the past I have noticed that even when I add just an inch or two of fill water and my TA goes up to about 100, my pH climbs above 7.8. So, I am worried that by adding a significant amount of fill water, my pH will be high all winter.
What's worse - high pH all winter, or the possibility of damaging my mesh cover? I'm thinking the high pH isn't too big a deal since my calcium hardness is only about 200.
Test results before closing:
FC - 15
CC - 0
pH - 7.5
TA - 80
CH - 200
CYA - 40
My concern about adding water to the pool is that my fill water has high TA (around 225ppm). Currently, my TA is 80 ppm which is the "sweet spot" that keeps my pH very stable. In the past I have noticed that even when I add just an inch or two of fill water and my TA goes up to about 100, my pH climbs above 7.8. So, I am worried that by adding a significant amount of fill water, my pH will be high all winter.
What's worse - high pH all winter, or the possibility of damaging my mesh cover? I'm thinking the high pH isn't too big a deal since my calcium hardness is only about 200.
Test results before closing:
FC - 15
CC - 0
pH - 7.5
TA - 80
CH - 200
CYA - 40