Just a quick question, I added approx 25lb of Boric Acid to my pool last year (14x26 in ground vinyl approx 9500-10,500). I closed it at the end of the summer here in NJ. I just reopened the pool (it was covered with a Loop Lock Mesh cover) and shocked and cleared up my pool a few days now. So Im wondering if I need to now re add Boric Acid again?
Also how can I measure the PPM for Borates in my pool if I need to know the levels?