I have a ph of 6.5, iron is at 12ppm, manganese is .44 ppm, hardness is 3 grains, and TDS is 90. I’m trying to figure out which media is the best in my scenario i know birm won’t work because of ph. All the solid magnanese oxides require a higher ph to perform at their full potential. Greensand requires chlorine injection (constant regeneration) or potassium permanganate/chlorine backwash which will require a carbon filter after. So the only other one that I think might be best case would be katalox light. Does anyone have any suggestions?