You most definitely will need to add more acid. It will most likely take 1/2-3/4 bottle to bring up to 50-60. As for the alkalinity, it is my understanding that with an above ground vinyl pool you don't have to worry to much about that since you are at 70. If it was me, after I got the CYA up I would shock with 8.25% or 10% bleach. Should clear up the cloudiness.