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Top 7 Reverse Osmosis Water Filter Picks

By Stan & Debbie Hauter, About.com

Using an individual reverse osmosis, deionization, or a combination RO/DI water filter unit to purify tap water sources before use in either fresh, brackish, or saltwater systems provides far superior water quality. These types of filters remove nitrate, phosphate and other chemical elements found in tap water that can lead to algae blooms and other problems. If you have a high level of contaminants in your tap water, a high performance Reverse Osmosis unit for maximum filtration is recommended.

1. Coralife Pure-Flo II Reverse Osmosis Units

Coralife Pure-Flo RO UnitPriceGrabber
Premium Thin Film Composite (TFC) units remove up to 99% of hardness, heavy metals, toxins, and many other impurities. Economical and easy-to-use units are wall mountable. Do not require separate flush kit - simply switch the two outlet fittings. 4-stage RO/DI unit with mixed-bed resin deionization cartridge removes any additional impurities to produce 99.9% pure water. Pure-Flo II with Reverse Osmosis pump is perfect for areas with low water pressure. Integrated diaphragm pump increases water pressure to maximize production without having to purchase a separate RO pump.
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2. Kent Marine Bare Bones TFC Reverse Osmosis Unit

Kent Marine Bare Bones ROPriceGrabber
The Bare Bones Reverse Osmosis unit by Kent Marine is a basic 2 stage reverse osmosis water filter with a TFC membrane and an IFCE inline carbon/sediment pre-filter which will remove 90-98% of water contaminants. Reverse Osmosis water at an affordable price.

3. Kent Marine Full-Size Reverse Osmosis TFC Unit

Kent Marine Full Size ROPhoto by PriceGrabber
The Kent Marine Full-Size Reverse Osmosis TFC Unit is a complete 3 stage water purification system at a reasonable price. This unit can be used with well or chlorinated water systems. Three sizes of Reverse Osmosis units to choose from.

4. Kent Marine HI-S Reverse Osmosis Unit

Kent Marine Hi-S RO FilterPriceGrabber
The 3-stage Hi-S Reverse Osmosis 35 and 60 include a Hi-S membrane to remove more phosphate, nitrate, and heavy metals than other membranes. They also include a sediment pre-filter and a solid carbon block filter. The 4-stage Maxxima 35 combines the features of the Hi-S units with a dual stage deionization cartridge. The Deluxe Maxxima 35 and Deluxe Maxxima 60 have the features of the Maxxima PLUS a liquid-filled pressure gauge and a TDS monitor to verify membrane function. All units include a 3/4" garden hose adapter and 6 ft of yellow, blue, and orange tubing. These Reverse Osmosis units can be run on any water system, well or city.
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5. Kent Marine Maxxima Reverse Osmosis/DeIonization Units

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The Kent Marine Maxxima Reverse Osmosis/DeIonization Units filter out 99.9% of the impurities in tap water. These 4 stage units can be used with any water source and will remove the maximum amount of contaminants from tap water.

6. Pinnacle Series Reverse Osmosis Units

Pinnacle Series RO UnitsPriceGrabber
This Reverse Osmosis unit features a single carbon pre-filter which ensures long membrane life and 5-micron sediment pre-filter removes particulate matter to keep water sparkling. Removes up to 99% of all impurities including silicates for clean, clear aquarium or tap water. 4-way automatic shutoff valve eliminates flooding. 35 gpd or 50 gpd Reverse Osmosis systems fit your unique aquarium.
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7. Spectrapure 3 Stage MaxPure MPRO Reverse Osmosis Unit

SpectraPure MaxPure ROPriceGrabber
The Spectrapure MaxPure MPRO Reverse Osmosis Unit efficiently removes water contaminants in 3 stages, with optional saddles and tubing it can be tapped into existing plumbing.

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