My pool has been pretty much algae free since I fired the pool guy and started the TFP method. I probably didn't brush it as often as I should, but it probably got brushed every 1.5 weeks through the summer, and that has continued through the winter.
The last few weeks I have started having algae (I assume) growing on the walls, worse on the South side than the north (pool is closely aligned with the long way east-west). It brushes away into a light greenish/brown cloud, which then clouds up the pool.
I'm in South Florida, with solar heat, so the pool stays in the very low 80s during the day, FC level is maintained within the recommended 4-6 with a CYA of 40-50. (That said, it was probably around 3.5 tonight when I added Cl, but tonight was an anomaly)
Tonight's Cl test (after adding about 18-20oz of 10.5% Cl and discovering it needed to be brushed):
Last weeks full test (didn't have time for a full run tonight):
CC=0 (CC has been 0 since 9/28 when it tested at 0.5 and it had been 0 for long before that)
On January 6th, CYA was 40 (after 3 days of tablets while I was away). There has not been anything to raise CYA since January 4th.