Iíve owned the same house for 3 years, filling the pool with well water without issues, but for the first time this spring I noticed yellowing below the waterline on my usually white fiberglass stairs. I did the Vitamin C tablet test and concluded it was iron staining.
So I did the treatment as advised here - lowered the chlorine to 0, added ascorbic acid which removed the stains, and also added Metal Magic to make sure the iron stayed ďsuspendedĒ in the water. I also added a CuLator pouch in my pump basket for good measure. All that worked liked a charm - stairs back to bright white. I used Polyquat 60 to keep the algae away while keeping the chlorine low for two weeks as recommended.
Now Iím in the process of SLAMing the pool since my chlorine level was dropped to zero. Suddenly I notice my stairs are yellow again!! I estimate Iíve spent about $100 on this issue between the Polyquat 60, CuLator, Metal Magic, vitamin C, and chlorine needed for the SLAM. I really donít want to go through this process again. Want to enjoy the pool for the summer and have guests over without embarrassing yellow stairs! Anyone have any suggestions?