Hydrologic water filters strip city or well water of contaminants.  By eliminating potential sources of stress for plants, such as chlorine, chloramines, heavy metals, and other pollutants, a water filtration system guarantees that only the essential elements reach the plants' roots.

Hydrologic Stealth RO systems are the main choice of hydroponic gardeners, an RO system strips water of all minerals so they can be reintroduced in the proper concentrations using the hyrdroponic nutrient line of your choice.

Soil and organic gardeners often opt for the SmallBoy, TallBoy or BigBoy filter which will strip out chlorine and chloramine from city water, contaminants which can kill beneficial microbes within the soil.