I am using the BBB method for pool balancing. My water was crystal clear last week and balanced well. I didn't test for chlorine for several days and now my pool is getting a little cloudy. I also have a skimmer sock which has some mild algae on there now. Yesterday, the FC was zero and then I shocked it with 50 ounces of bleach (6%). Should I get the FC level to higher than 8? Today, the FC is 1.0. I'm using the Poolmaster 5 way test kit.
Above ground
4500 gallon
FC 1.0
pH 7.8
TA 110
CYA 50
Above ground
4500 gallon
FC 1.0
pH 7.8
TA 110
CYA 50
Well, your FC is extremely low for your pool with a CYA of 50. Your FC should never be below 4. Now that it has, I suspect you have an algae bloom starting which is why it's cloudy. I would recommend first lowering your pH to about 7.2, then taking your FC up to the SLAM level of "20" and perform a "SLAM" (link below). Maintain that FC of 20 until you pass all3 SLAM criteria. Use regular bleach as your sanitizer, and if you have any chlorine tabs/pucks in use, remove them.