My manganese level in my refill water is very high. Iron is not detectable in refill water. Had water tested at servi-tech lab, so I know my problem is the high manganese. I had a leak in my pool a different thread, when I refilled I added about 6000 gallons and water was instantly brown. I thought to myself here we go again another week of dirty water. I brought the chlorine level close to shock level. To my surprise within a day and a half water is crystal clear again. I back washed three times and water was a reddish brown each time. My question is, is my filter filtering the manganese out of the water and do I need to add a metal sequestering agent to my pool? I have just a little staining in my skimmer box which is white. I have read a few posts that some people say they are lucky with there high metals in there water that they can filter them out, while others have to add something to sequester the metal.
This is about the same amount of refill water I add after winter and it takes about two weeks to clear up. Same results backwash is reddish brown all the time. This is my first year with borates in my pool. Does that have anything to do with how quickly it cleared up after refilling?