The cloudiness is dead algae. The filter should take care of it but it can take some time. Floc (correct spelling) or flocculant is what you used before. Sometimes it can be helpful. Also, a clarifier can cause the dead algae to clump into larger paritcles that your filter can remover more effeciently. Be aware that using either of these types of products can introduce their own problems (uaually very small). If the pool has no more green and the filter has not taken care of the cloudiness in a few days of constant running then you might want to try either one or the other. Clarifiers are better if the water is only slightly cloudy. If there is a lot of stull suspended in the water then a floccuant is a better choice. If you have not killed all the algae yet then you just need to keep up with the chlorine and THEN worry about getting it clear. It usually clears up on it's own once the algae is gone.
Hope this helps