So, the wife and i followed some lackluster advice last year when diagnosing an issue with our pool and ended up replacing the sand in our filter. the sand that was recommended looked a lot more granular than the sand we removed, it looks like tiny rocks. the issue was fixed this year (pool hasn't run in a year) and despite the water tests coming back within range, if a bit low in some categories, the pool isn't becoming clear at all.
we have been shocking once per week, topping off the chlorine once per week, cyanuric acid is slightly low, but we keep adding it, PH is good, if not .2 too low when we shock it, and so on so on.
we have done all the pool store's recommendations, including 3 clear socks, some weird non-chlorine sanitizer and still, it's blue but milky cloudy.
is it possible that the filter sand we bought isn't working well?