Numbers are as follows, P.H. 7.2 (trying to lower TA per Pool Doc's reccomendation form SWCG pools), FC 5.0, TA 90 CYA 80, CH 300.

I have small greenish yellow patches on the sides of my pool in certain areas, mainly in the corners. When I brush these areas with a wire algae brush they clear up easily and produce a white cloudy substance in the water. How should I best handle this? Continue to brush these areas as I notice them or should I shock with bleach?

Thankyou in advance!