I have recently developed some metal stains while in the shock process....
Vit C tablets dramatically improve them. They are about 30 in number. They are quite small. I am not eager to lower my FC, since I just shocked my pool and it looks very good both by tests and eye.
I was thinking of fixing them one by one either by putting my dive gear on and rubbing them away with the vitamin C tablets or using the sock technique. Should I use a sequestering agent first? Any suggestions on the best one?
Thanks in advance.