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Garden Hose "RO" Filters Are Not True Reverse Osmosis

A grower considers a garden-hose-connected filter from pwgazette.com for 78 ppm tap water.

Analysis

The site offers only carbon filters (don't remove minerals) or softener cartridges (swap calcium/magnesium for sodium – worse). None are true RO. Their actual RO units are at this link – countertop unit suits low usage. Since water isn't very hard, filters last longer. Alternatively, ZeroWater pitcher uses deionization and includes a TDS meter.

Carnivorous Plants: Is DeRoose Nepenthes Soil Mix Acceptable?; Do Carnivorous Plants Need Minerals Added to Reverse Osmosis Water?; Tacoma, WA Tap Water Unsuitable for Carnivorous Plants (156 ppm); Using Pond Water for Carnivorous Plants: Test TDS First; Choosing an RO System for Hard Well Water: Hydro-Logic Merlin Review; Watering Nepenthes: Brita Filter vs. Tap Water Flushing; Chloramine in Tap Water: Test on Houseplants First; Tap Water Analysis for Carnivorous Plants: Is Your Water Safe?; Aquatic Plants for Water Features; Automated Drip Irrigation for Container Gardens: A Complete Setup Guide

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