High CH, Fiberglass Pool
- Thread starter andrewm
- Start date
It could an issue be if the pH and TA were allowed to get too high. Under the right (wrong) conditions, scale can form on the walls. It's like grow-your-own sandpaper.
I, personally, don't consider 375 high at all. In the five years I've owned my pool, I've never been that low. It just requires a little more care. Post your test results and you can get some specific advice.
I, personally, don't consider 375 high at all. In the five years I've owned my pool, I've never been that low. It just requires a little more care. Post your test results and you can get some specific advice.
Coming down from a SLAM, still dialing in my SWG % and pump run time:
5:45pm yesterday:
FC 4.5
CC 0.0
TA 80
CYA 50
pH 7.5
salt 3000
Added 4 lbs stabilizer and 40 lbs salt to raise my CYA to 75 and salt to 3200. Let pump run overnight, w/ SWG set to 100%, to mix.
06:30am today:
FC 7.5
CC 0.0
salt 3200
didn't test anything else.
5:45pm yesterday:
FC 4.5
CC 0.0
TA 80
CYA 50
pH 7.5
salt 3000
Added 4 lbs stabilizer and 40 lbs salt to raise my CYA to 75 and salt to 3200. Let pump run overnight, w/ SWG set to 100%, to mix.
06:30am today:
FC 7.5
CC 0.0
salt 3200
didn't test anything else.
When I plug your numbers into poolmath, and call the water 82F, CSI is -.26. There's no risk of scaling when the number is negative.
Thanks, I saw that too. Although the water temp is closer to 90. Just wanted to double check.
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