Hello all. This is my first time visiting and did not find anhy postings to answer myh question....so here it is.
New pool last June, Salt water, 18k gallons, light blue plaster, inground with pop up cleaners, tucson arizona. Calcium up around 550 ppm...all other chemicals within suggested limits (excepty chlorine was only .5 for about 1 week due too chlorine generator on fritz, but now working properly and back up to normal limits). did light no drain acid wash 5-6 weeks ago secondary to some staining from a powder ph reducer i used that settled on bottom of pool, but use muriatic acid all but that one time. now calcium hardness is 550. i tested my in home water and it is at 150ppm (have potassium soft water system that is for entire home including outdoor faucets. is there anyway to reduce calcium hardness back to 300ish other than draining halfway and refilling with the 150ppm soft water. if i did the drain and refill it would get me to approximately 350ppm (9k of 550 ppm plus 9k of 150 ppm...would average to 350ppm). thanks for any help.