I have a gunite pool with a SWG so naturally my pH creeps up. I’ve done the borax treatment which helped lessen the need for acid, but (I think) I’m still having a scale problem.
I’m still getting little “dots” or “lines” (sort of shaped like icicles) on the pool walls. Normal brushing doesn’t remove them, but when I use a kitchen scrubber (which sort of looks like a Brillo pad made out of plastic attached to a handle) they usually come right off. When I’m doing my “brillo scrub” along the walls, white “dust” also billows off. I’m assuming this is very tiny bits of scale that. This “dust” comes off only when I use the brillo scrubber, not when I use the regular pool brush on the long pole.
I guess my questions are:
1. Is this scale coming off?
2. Will it ever stop?
3. What can I do about it? (both the “dust” and the actual scale formation)
Here are my numbers:
**Regarding the pH - - we’re only at the pool on the weekends, so during the week it creeps up to 7.8 or higher and on the weekend I knock it down to 7.2 or so.
What's my next step?
PS - pool is 4 years old