HydroLogic Stealth-RO300 Reverse Osmosis Filter
Best high-capacity filtration for serious hydroponic and garden enthusiasts.
The HydroLogic Stealth-RO300 is a high-efficiency reverse osmosis filter system designed for gardening and hydroponics. This unit produces an impressive 300 Gallons Per Day (GPD) of ultra-pure water, removing over 98% of contaminants. It features a 4-Stage RO unit with two RO membranes, a Green Coconut Carbon Filter, and a cleanable sediment filter. The system includes an automatic shut-off valve and a pressure gauge for easy monitoring. Built in the USA, this trusted system offers 50% more filtrate water than previous models, making it an excellent choice for growers seeking pure water.
$369.49
Owner Satisfaction
4.6
/ 5
Category Rank
36
/ 827
#36 in Water Filters
Price vs Category Average
-31%
Below average
Capacity
300
/ GPD
Who it's for
- Commercial growers needing high-volume water output
- Botanists requiring ultra-pure water for sensitive plant species
- Eco-conscious gardeners prioritizing water conservation
Who should skip it
- Budget-focused growers avoiding recurring maintenance expenses
- Homeowners with low water pressure systems
- Environmentalists concerned about total wastewater volume
Performance breakdown
Purification Efficiency
Removes 98% of contaminants for consistently clean hydroponic nutrient solutions.
Output Capacity
Produces 300 gallons daily to support even the largest home gardens.
Maintenance Ease
Cleanable sediment filter and power flush kit simplify routine system upkeep.
Installation Versatility
Compact wall-mountable design fits easily into tight grow room spaces.
Monitoring Precision
Integrated pressure gauge with color zones ensures optimal operating performance.
Build Integrity
Robust USA-made construction stands up to the demands of daily use.
Key Specs
Capacity
300 GPD
Dimensions
18.5" x 16" x 6"
Weight
12.5 lbs
Stages
4-Stage RO unit
Includes
2 RO membranes, Green Coconut Carbon Filter, cleanable sediment filter
Features
Automatic shut-off valve, pressure gauge with colored operating zones
Origin
Built in the USA
Contaminant Reduction
Lead, Sediment
Features
- Produces 300 GPD of ultra-pure water.
- Removes over 98% of contaminants.
- Includes a membrane power flush kit.
- Offers flexible waste to product water ratios.
- Wall-mountable bracket for easy installation.
- Automatic shut-off valve for convenience.
- Pressure gauge with colored operating zones.
- Ideal for gardening and hydroponics.
What customers say
The HydroLogic Stealth RO300 earns high marks primarily for its exceptional reliability and user friendly design. Consumers consistently report that the system delivers pure water efficiently and without fuss, establishing it as a dependable foundation for successful growing operations. Setting up the unit is surprisingly simple, often requiring minimal time and effort. This consistent, worry free performance justifies the investment, positioning the RO300 as a premium solution that truly prioritizes the consumer's need for precision and quality output.
Know before you buy
The 4-stage system combines a cleanable sediment filter, a Green Coconut Carbon filter, and dual RO membranes to remove over 98% of contaminants, including lead and sediment. This ensures your plants receive ultra-pure water, which is essential for optimal nutrient uptake in hydroponic environments.
Yes, the unit comes with a dedicated wall-mountable bracket. This keeps the 18.5" x 16" x 6" system secure and off the floor, saving valuable space in your grow area.
The unit features an integrated pressure gauge with clearly marked colored operating zones. This allows you to monitor the system at a glance and ensure it is functioning within the optimal range for water production.
The power flush kit allows you to manually clean the RO membranes to remove buildup and debris. Regular flushing helps maintain the system's 300 GPD output and extends the overall lifespan of the membranes.
No, the automatic shut-off valve is designed to stop the flow of water once the storage tank is full or the line is closed. This prevents water waste and protects the system from unnecessary pressure buildup.
The Stealth-RO300 uses universal pod-style filter cartridges. This makes finding and installing replacements straightforward when it comes time for routine maintenance.
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$369