I added this to the RO-HI system (5 filters). It was very easy to install. It didn't raise the pH as much as I expected. This raised the pH from around 5 to 6. I was expecting it to be closer to 7. Given that this filter needs to be replaced every 6 months I think the cost is a bit high. $25-30 will be just right.
Filter under the sink Aquaphor Favorit ECO silver
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NANPU Compressed Air Filter Regulator Combo: Brass Element, Semi-Auto Drain, 0-150 Psi Gauge, And More
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NANPU 1/2" NPT Air Drying System - 5 Micron Particulate Filter, 0.01 Micron Coalescing Filter, Air Pressure Regulator Combo - Semi-Auto Drain, Poly Bowl W/Metal Gauge
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NANPU DFR-02 1/4" NPT Air Drying System - Double Air Filters, Air Pressure Regulator Combo - Semi-Auto Drain, Poly Bowl
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