This is my first semi-complete water test. Pool is about 1 month old.
IG 12000 g plaster
Not much I can do to lower CH outside of replacing water from what I have been reading. Any other suggestions? Should I take a tap water measurement to ensure there isn't too much calcium in the water before re-filling the pool? Poolmath calculator says I need to replace 42% of the water to lower it to 350.