Hello. New here. Love this forum! Question. Added liquid shock to pool last night. Free chlorine at 11 ppm now. Alkalinity at 40. (Using Taylor fas dpd to test) Ph at 7.4. Want to add about 9 lbs of sodium bicarbonate To raise alkalinity. Will do 1/2 now. 1/2 later. This sound right? Will it raise the ph too much? Is it ok to add while chlorine is high? Don't want to mess anything up....pool is crystal clear now. Thanks. Oh and cya at 30. New fill new liner this year