I am looking for a recommendation for filtration of well water with the following characteristics: pH 6.8-7.0, Iron .2 ppm, Alkalinity 120 ppm, Hardness 7 grains/gal, Iron bacteria 500 cfu/mL. I have 2 1/2 baths, 4 people in the house. Flow rate is 10 gal/min. The problem arose when I noticed a brown ring in the toilet bowl. The tank had a bunch of black slime in it. I am about to move into this new house and want to make sure I have good water to shower, wash clothes and drink. A plumber has recommended I install a chemical injection system to chlorinate the water and raise the pH and follow that with a filter to remove the iron, chlorine and other impurities. I would like a second opinion.