lzicc
Platinum Member
The neighbors have city water. Hopefully it will extend to me soon. My softener is placed after all the filters. I wonder if it would be a good idea to put it first in line of treatment?
It sounds like manganese which precipitates from the water as a black film, usually it occurs in conjunction with iron or iron bacteria. If so, then it isn't sediment being sucked up by the pump, it's a chemical precipitate being deposited on the filter media. Low concentrations can be effectively treated with just the softener, higher concentrations require a "green sand" filtration system.
Ask your neighbors what they are using. Have the water sampled and tested for iron and manganese to see what you are actually working with and then use the data to come up with an effective treatment system.