didn't know whether to address the ph and hardness or not before getting the chlorine level up so i went ahead and started adding bleach...was going to add 4 gallons(my cya is 60 and i have 20,000 gallons) but after adding the second gallon i noticed the pool to cloud...since i am new to bleach...would you please tell me if that is normal and if i should go ahead and add the rest of the bleach tonight? thank you