Comparison: Best Reverse Osmosis System For Hydroponics (Updated | Oct 22nd)
Choosing the right reverse osmosis (RO) system for hydroponics is crucial for maintaining water quality and optimizing plant growth. With hydroponics relying on precise nutrient balance, an effective RO system removes impurities, salts, and contaminants, ensuring a clean, consistent water supply. This comparison evaluates key features like filtration efficiency, flow rate, maintenance requirements, and compatibility with hydroponic setups. Whether you’re a hobbyist or commercial grower, understanding these factors can help you select a system that supports healthy, thriving crops without compromising performance or convenience.
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Editor’s Choice
Best for a specific purpose
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Best for best budget:
Aquatic Life RO Buddie 3-Stage Hydroponic Reverse Osmosis Water Filter System RO Filtration Unit -
Best for high capacity:
Aquatic Life 5-Stage Hydroponic Reverse Osmosis Water Filter System RO Filtration Unit -
Best for alkaline boost:
iSpring RCC7AK -
Best for best overall:
4 Stage – Hydroponics Reverse Osmosis Water Filtration System | 100 GPD | Water Purifier for Indoor or Outdoor Garden Use | Hydroponics Growing System by Oceanic Water Systems -
Best for zero tds:
Max Water 6 Stage Aquarium System/RO Water Filtration System with Deionization Filter RO Water Purifier 100 GPD Hydroponics RODI System (Clear Housing System with TDS Meter) -
Best for portable system:
LiquaGen- 4 Stage Hydroponics Reverse Osmosis Water Filtration System- 100 GPD | Water Purifier for Indoor or Outdoor Garden Use | Hydroponics Growing System | Healthy Plants starts with Healthy Water -
Best for deionization ready:
Aquatic Life RO Buddie 4-Stage Reverse Osmosis Deionization Water Filter System RO/DI Filtration Units for Aquarium -
Best for efficient ratio:
RO + DI High Efficiency 1 to 1 Ratio 100 GPD Reverse Osmosis + DI Water Purification System Made by Koolermax USA for Aquarium -
Best for compact design:
3 Stage – Hydroponics Reverse Osmosis Water Filtration System | 100 GPD | Plant Growth -
Best for wqa certified:
APEC Water Systems ROES-50 Reverse Osmosis Water Filter Essence Series Top Tier 5-Stage WQA Certified Ultra Safe Reverse Osmosis System
Product Comparison: Best Reverse Osmosis System For Hydroponics
Best budget
Aquatic Life RO Buddie 3-Stage Hydroponic Reverse Osmosis Water Filter System RO Filtration Unit, 75 GPD
Aquatic Life
- CONVENIENT RO WATER – The AquaticLife RO Buddie is a 3-stage RO reverse osmosis system designed for hydroponic use. Produce up to 75 gallons of filtered water with this 75 GPD RO reverse osmosis filter.
- REMOVES UP TO 98% OF TDS FROM WATER: The RO reverse osmosis water filter helps remove up to 98% of Total Dissolved Solids (TDS) from water. This RO filter system for making aquarium water provides optimal filtration for your aquatic environment.
- MEMBRANE FILTRATION: The RO membrane filter in the reverse osmosis water filtration system reduces Total Dissolved Solids (TDS) from the water down to the ratio of 1 out of 10,000.
- EFFECTIVE SEDIMENT REMOVAL: The sediment filter in the RO water filtration system captures sand, silt, and more, which affect the quality and appearance of water.
- CARBON BLOCK FILTER: The carbon block filter in the RO water system eliminates chlorine and conditions water before it reaches the RO membrane.
High capacity
Aquatic Life 5-Stage Hydroponic Reverse Osmosis Water Filter System RO Filtration Unit, High Efficiency, 200 GPD
Aquatic Life
- 200 GPD OF FILTERED REVERSE OSMOSIS WATER – The Aquatic Life 5-Stage RO reverse osmosis system provides up to 200 Gallons Per Day of filtered reverse osmosis water.
- REMOVES UNWANTED MATTER FROM WATER – This RO reverse osmosis filter works to effectively reduce unwanted matter from water such as, chlorine, chloramines, heavy metals, total dissolved solids, and more.
- WHAT’S IN THE BOX – This RO reverse osmosis water filter includes (1) Canister Wrench, (1) Membrane Wrench, (2) 100 GPD RO Membrane Cartridges, (1) Pre-Filter Sediment Cartridge, (2) Coconut Shell Activated Carbon Block Filter Cartridges, and more accessories.
- CARTRIDGE FEATURES – The Activated Carbon Block filter provides excellent chlorine reduction. The Sediment filter captures and reduces unwanted matter from water. The Carbon Plus Chloramine filter cartridge features high-capacity reduction of chloramines.
- BUILT-IN WALL BRACKET – Mounting bracket allows the reverse osmosis water filtration system to be hung and secured in place. An auto shut-off valve stops incoming water supply when outflow is turned off. Includes a garden hose faucet adapter to connect to any standard 3/4" faucet.
Alkaline boost
iSpring RCC7AK, NSF Certified, 75 GPD, Alkaline 6-Stage Reverse Osmosis System, pH+ Remineralization RO Water Filter System Under Sink, Patented Top-Mounted Faucet Design for Easy Installation
iSpring
- PATENTED DESIGN – The top-mounted fastener allows for easy countertop installation entirely from above, eliminating the hassle of tightening the nut from underneath the sink.
- MINERAL BOOST – The patent-pending natural mineral AK stage delivers spring water with a balanced, healthy pH and multiple essential minerals.
- SEE WHAT’S CAUGHT – The transparent first-stage filter housing makes it easy to monitor contaminant buildup, ensuring timely filter changes.
- NSF 58 CERTIFIED RO SYSTEM – Unlike other brands that lack NSF certification or full system certification, our RCC7AK is certified to NSF/ANSI 58 and 372 standards for the entire water filtration system.
- EFFECTIVE FILTRATION – Reduces TDS (93-98%), PFAS (96-99%), Chlorine (95-99%), Asbestos (>99.7%), Barium (>98.4%), Cadmium (>98.8%), Chromium (>99.2%), Copper (>97.8%), Fluoride (>97.4%), Lead (>98.9%), Selenium (>99.0%), and over 1,000 other contaminants.
- EASY INSTALLATION – The RO water system features a DIY-friendly design with quick-fitting connections, a clear manual, and step-by-step videos for a hassle-free setup.
- TRUSTWORTHY SUPPORT – America’s favorite RO brand, backed by lifetime technical support in Atlanta, GA, ensuring expert assistance whenever you need it.
- CONVENIENT REPLACEMENT FILTERS – Easy access to replacement filter sets: F4AK (6-Month), F9K (1-Year), F19K75 (2-Year), and F28K75 (3-Year).
Best overall
4 Stage – Hydroponics Reverse Osmosis Water Filtration System | 100 GPD | Water Purifier for Indoor or Outdoor Garden Use | Hydroponics Growing System by Oceanic Water Systems
Oceanic Water Systems
- Designed to make sure your plants receive the purest water for healthy plant growth! Includes a Garden Hose Adapter. Water Purifier for Indoor or Outdoor Garden Use | Hydroponics Growing System
- Stages : 1st Stage Sediment Filter, 2nd Stage Carbon Block, 3rd Stage Carbon Block, 4th Stage Reverse Osmosis Membrane 100 GPD
- Pre- Assembled system for easy installation. Made in USA
- 3rd Stage: 100 GPD Reverse Osmosis Membrane : Reduces or removes Sodium, Sulfate, Calcium, Potassium, Nitrate, Iron, Zinc, Mercury, Selenium, Phosphate, Lead, Arsenic, Magnesium, Nickel, Fluoride, Manganese, Cadmium, Barium and Cyanide.
- Coconut Shell Carbon Filters gets rid of unpleasant chlorine, tastes, odors, cloudiness and colors. Also removes VOCs and other common chemicals from the water
Zero TDS
Max Water 6 Stage Aquarium System/RO Water Filtration System with Deionization Filter RO Water Purifier 100 GPD Hydroponics RODI System (Clear Housing System with TDS Meter)
Max Water
- 6 Stage Home Water Filtration System: Max Water 6-stage reverse osmosis deionization system RO-DI impurity particles down to 1/10,000 of a micron effectively filter out 99.99% of impurities after DI (deionization) stage. This includes filteration in bad odors, lead, fluoride, copper, cysts (cryptosporidium, giardia, entamoeba & toxoplasm) and other metallic ions from water leaving you with clean, clear water.
- Safe Aquarium Use: A RO/DI reverse osmosis deionization system system filter out contaminants from tap water, making it safe for use in your aquarium fish tank. When it comes to home water filtration, you're going to either have an RO or RO/DI system. An RO and RO/DI are almost identical except the RO/DI system has an extra filtration stage called the "DI or Deionization" stage which brings the water down to 0 TDS (total dissolved solids).
- Simplified Installation: Our systems are designed to help installing and maintaining them easier. Quiick Connects are color coded to make knowing how to install the system quick and easy. All filter housings are labeled for easy filter replacement.
- BPA free components: Our RODI water filter system doesn't contain Bisphenol A or other toxic plastic materials. If you need float valve in installation of this system then search this ASIN number B07DRWLB92 in amazon to buy separate.
- Quality Tested: We consistently provides products and services that meet customer quality requirements.
Portable system
LiquaGen- 4 Stage Hydroponics Reverse Osmosis Water Filtration System- 100 GPD | Water Purifier for Indoor or Outdoor Garden Use | Hydroponics Growing System | Healthy Plants starts with Healthy Water
LiquaGen
- Designed to make sure your plants receive the purest water for healthy plant growth. By controlling your water quality you can start controlling the quality of what you grow. This is a Portable Water Filter System, which can be installed in just 5 minutes!
- 1st Stage: Sediment Block – High-Capacity Polypropylene Sediment Filter (Nominal 5 Micron Rating) -Removes dust, particles, and rust. Protects and extends the life of the reverse osmosis membrane and system.
- 2nd Stage: UDF Activated Charcoal Bulk of Carbon- Removes chloride, organic chemicals, tastes & odors from tap water.
- 3rd Stage: Coconut Carbon- Takes out unpleasant chlorine, cloudiness, VOC's & colors. The carbon water filter system will eliminate impurities & harmful minerals.
- 4th Stage: Reverse Osmosis Membrane- Removes harmful contaminants such as Mercury, Lead, Fluoride, Cyanide, etc. The heart of the unit, allowing for 100 gallon of water per day!
Deionization ready
Aquatic Life RO Buddie 4-Stage Reverse Osmosis Deionization Water Filter System RO/DI Filtration Units for Aquarium, 50 GPD
Aquatic Life
- SUPERIOR WATER QUALITY: This Aquatic Life RO Buddie is a 4-Stage RO reverse osmosis system. Produce up to 50 gallons of filtered water per day with this 50 GPD RO reverse osmosis filter. This ro/di filter system for making aquarium water provides optimal filtration for your aquatic environment.
- MEMBRANE FILTRATION: The RO membrane filter in the reverse osmosis water filtration system reduces Total Dissolved Solids (TDS) from the water down to the ratio of 1 out of 10,000.
- EFFECTIVE SEDIMENT REMOVAL: The sediment filter in the RO water filtration system captures sand, silt, and more, which affect the quality and appearance of water.
- CARBON BLOCK FILTER: The carbon block filter in the RO water system eliminates chlorine and conditions water before it reaches the RO membrane.
- COLOR-CHANGING DEIONIZATION FILTER: The mixed bed deionizing resin in the RO reverse osmosis water filter employs Cation and Anion beads to remove any remaining TDS from the membrane-filtered water.
Efficient ratio
RO + DI High Efficiency 1 to 1 Ratio 100 GPD Reverse Osmosis + DI Water Purification System Made by Koolermax USA for Aquarium, Reef, Aeroponics, hydroponics, misting, ultrapure Water, spot Free
Koolermax
- RO+DI process, RO removes 95% of dissolved solids, DI removes the remaining 5%, for example, tap water TDS reading 250 ppm, after the system the TDS is about 0 to 3 ppm
- High Efficiency 1 to 1.2 ratio, production to drain ratio using special high efficiency RO membrane filter. Typical RO system has 1 to 4 product to waste water ratio
- Large sediment filter and large carbon filters, large refillable DI filter nuclear grade with color changing DI resin,100 GPD production speed
- Includes all filters, installation hardware for garden hose and under-the-sink connections
- Built-in pressure gauge
Compact design
3 Stage – Hydroponics Reverse Osmosis Water Filtration System | 100 GPD | Plant Growth
AQUA TRUE BLUE
- 1st Stage: Sediment Filter – High-Capacity Polypropylene Sediment Filter (Nominal 5 Micron Rating) -Removes dust, particles, and rust. Protects and extends the life of the reverse osmosis membrane and system.
- 2nd Stage: Coconut Carbon Block: Gets rid of unpleasant chlorine, tastes, odors, cloudiness and colors.
- 3rd Stage: 100 GPD Reverse Osmosis Membrane : Reduces or removes Sodium, Sulfate, Calcium, Potassium, Nitrate, Iron, Zinc, Mercury, Selenium, Phosphate, Lead, Arsenic, Magnesium, Nickel, Fluoride, Manganese, Cadmium, Barium and Cyanide.
WQA certified
APEC Water Systems ROES-50 Reverse Osmosis Water Filter Essence Series Top Tier 5-Stage WQA Certified Ultra Safe Reverse Osmosis System
APEC WATER
- Only technology to remove up to 99% of impurities including arsenic, chlorine, lead, fluoride, heavy metals, and 1000+ impurities. Max Total Dissolved Solids – 2000 ppm. Feed Water Pressure 40-85 psi
- WQA Certified System. Premium long-lasting filters used to treat tap water, well water. Provide unlimited clean, refreshing crisp tasting water superior to bottled water
- America's No.1 rated water filter brand with 20 years of success guaranteeing trouble free, noise-free system for long lasting, dependable, pure drinking water.
- System comes with 100% lead-free designer faucet, plus Certified JG premium grade tubing and parts to provide safe, impurity-free pure water. Pipe Size:1/4 inches
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product.
Buying Guide
FAQs
Which system is best for small-scale hydroponics?
Aquatic Life RO Buddie 3-Stage (B0BXQRG47L) is compact and ideal for smaller setups.
Which reverse osmosis system has the highest purification stages?
iSpring RCC7AK (B005LJ8EXU) and Max Water (B07C4SPYLH) both offer 6-stage filtration.
Which system includes deionization for ultra-pure water?
Aquatic Life RO Buddie 4-Stage (B00204CQF6) and Max Water (B07C4SPYLH) include deionization stages.
Which system is NSF certified?
iSpring RCC7AK (B005LJ8EXU) is NSF Certified for safety and performance.
Which systems provide 100 GPD output?
4 Stage Hydroponics (B07T13RQ38), LiquaGen (B01IP66KAE), and RO + DI (B08TW37KW6) all offer 100 GPD capacity.
Which system is most efficient with a 1: 1 water ratio?
RO + DI High Efficiency (B08TW37KW6) operates at a 1: 1 purification ratio.
Which systems are designed specifically for hydroponics?
Aquatic Life 5-Stage (B071W1KJX1), 4 Stage Hydroponics (B07T13RQ38), and LiquaGen (B01IP66KAE) are hydroponics-focused.
