New in-ground vinyl salt pool, 20K gallons, green and cloudy after every rain. Added 2 gallons of muriatic acid, full strength, and it cleared up over night. TA was still high, FC 7, CC 0, TA 160-180, pH was around 7.0. Bad rain last night, green and cloudy again this morning. No algae, just green and cloudy. Will I have to buy 3 gallons of muriatic acid every time it rains, or is this just part of balancing the chemistry in a new pool combined with lots of rain?