Pretty sure I have/got mustard algae. I started noticing some orange/brown debris on the bottom of the pool and later on the walls. When I brushed it, it had the appearance of dirt in the water, but would not vacuum up. Later (while waiting on my DPD-FAS kit to arrive) the water turned completely green.
Starting my algae killing chore this last weekend. Started with CYA at 30. Lowered PH to around 7.0. Started adding bleach, added more bleach, added more bleach, added more bleach. Finally got the FC to 19. Held it there for 1 day, while brushing the pool often. Have maintained the FC in the 12-13 range for the last two days with no visible improvement in water color/clarity. Overnight FC loss will be in the 1-2 ppm range. Have been running the pump 24/7. Sand filter started at 17 psi (with brand new gage) after 2 days it's only at 19 psi.
Any ideas of why my pool is not clearing up? I have not observed this "milky white"/"gray" color that is reported here. Thanks in advance for the help.
48,200 gallon, sand filter