Ah... Good question. I added 2 oz of Floc on 4/25. Backwashed on 4/26, 4/30, 5/10 and today 5/16. The pool has been clear since about 4/28. Nothing else except 10% chlorine and 1 lb of CYA. Free chlorine has been around 5 except for the last few days it has been low and and untested. Water...