Sometimes there are residual effects from the pool store additions that were put in prior to using the TFP methods.
Sometimes there are residual effects from the pool store additions that were put in prior to using the TFP methods.
Correct - increase FC to 16 and keep-on SLAMing.
What other parts of the SLAM are you practicing? Are you brushing? Are you vacuuming? Are you cleaning the filter? Make sure you are being very pro-active in your SLAM by doing all these things that will help your pool clear itself.