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💧 Elevate your water game with precision purity — because your aquatic life deserves the best!
The Aquatic Life RO Buddie Plus DI is a heavy-duty, compact 4-stage reverse osmosis and deionization system producing up to 50 gallons of ultra-pure water daily. Featuring sediment and carbon pre-filters, a high-efficiency RO membrane, and a color-changing mixed bed DI resin cartridge, it reduces total dissolved solids to near zero, ideal for aquariums and sensitive plants. Easy to install under sinks with included mounting hardware and quick-change cartridges, it ensures reliable, economical water purification with clear visual maintenance cues.









| ASIN | B00204CQF6 |
| Best Sellers Rank | #7,149 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #19 in Replacement Water Filters |
| Brand | Aquatic Life |
| Brand Name | Aquatic Life |
| Capacity | 50 gallons |
| Container Type | Unit |
| Country of Origin | China |
| Customer Reviews | 4.5 out of 5 stars 4,787 Reviews |
| Global Trade Identification Number | 00810957010195 |
| Included Components | RO Buddie Four Stage Reverse Osmosis System Cartridge |
| Included components | RO Buddie Four Stage Reverse Osmosis System Cartridge |
| Installation Type | Under Sink |
| Item Dimensions L x W x H | 34.9L x 19.1W x 15.2H centimeters |
| Item Type Name | Aquatic Life RO Buddie 3-Stage RO System - 50 GPD |
| Item Weight | 3.9 Pounds |
| LowerTemperature Range | 77 Degrees Fahrenheit |
| Manufacturer | Aquatic Life LLC |
| Material | resin |
| Material Type | resin |
| Maximum Flow Rate | 180 Liters Per Day |
| Model Name | 540019 |
| Model Number | 540019 |
| Other Special Features of the Product | Heavy Duty |
| Part Number | 540019 |
| Power Source | Corded Electric |
| Product dimensions | 34.9L x 19.1W x 15.2H centimeters |
| Purification Method | Reverse Osmosis |
| Smart Home Compatibility | Not Smart Home Compatible |
| Special features | Heavy Duty |
| Supported Water TDS Level Maximum (PPM) | 300 |
| UPC | 810957010195 |
| Unit Count | 1.0 Count |
| Upper Temperature Rating | 25 Degrees Celsius |
| Warranty Description | 1-Year Limited |
R**N
excellent product
this RO system is low cost and highly effective with the individual filters having good longevity, used for my carnivorous plants and fishtanks in an area with very hard and chemically treated water, produces about 2 TDS as final output
S**I
Great product
delivered fast and easy to install, water tests 0 tds which is perfect!
B**B
Blue resin life
I brought this product. I am very happy with the result, but now the blue resin filter has turned a light brown color and the TDs are high. If any one knows how many liters of 0 tds water we can get in this resin filter before it turns to brown,
H**H
Works as advertised.
Does what it says on the tin. 50gpd took a looooong time to fill my 400l aquarium. But its great for water changes and keeping the reservoir filled.
H**P
"AQUATICLIFE RO Buddie Plus: The Ultimate Aquarium Water Wizard!"
G'day! If you've ever thought your aquarium water looked as murky as a billabong after a storm, let me introduce you to the AQUATICLIFE RO Buddie Plus. This little wonder turns your tap water into the purest, most pristine aquarium water imaginable. Think of it as the ultimate water wizard—it takes your H2O from “ugh” to “ahh!” The RO Buddie Plus works its magic to deliver water so clean, even your fish will think they're swimming in a luxury resort. Say goodbye to algae problems and hello to crystal-clear waters! Setting up this gem is easier than finding a kangaroo in the outback. Just hook it up, and you’re good to go. No PhD in marine biology required! This compact unit fits snugly under your sink, working tirelessly to provide top-notch water quality. It's like having a mini ocean purification plant right in your kitchen, minus the fishy smell. The AQUATICLIFE RO Buddie Plus has turned my aquarium into a sparkling underwater paradise. My fish are happier than a blue-ringed octopus at high tide. If you're tired of your aquarium looking like a scene from a murky swamp, do yourself a favor and get the RO Buddie Plus. Your fish will thank you, your mates will be impressed, and you’ll be the proud owner of the best-looking tank on the block. Cheers to happy, healthy fish! 🐠
H**M
Outstanding
Amazing it’s output is exceeding 50GPD
A**R
Great system and very cheap
Great system and very cheap, Worth pointing out if DOES NOT come with a Chlormide filter and have to be bought additionally
E**R
Une osmose de qualité pour de l'eau de qualité!
J'ai fait l'achat de cette osmose pour mon aquarium d'eau de mer il y a 6 ans (en 2020). Mon père l'a également utilisé pour ce faire de l'eau osmosée pour sa machine à apnée du sommeil. Ayant une esu très dure et contaminé par des Pfas/Pfos, je peux vous dire que cette petite osmose fait le travail à la perfection, et donne une eau de première qualité. Je m'en sers même pour mon eau potable à l'occasion. Vraiment, je recommande fortement cette osmose, vous ne le regretterez pas!
P**Y
Go for it
Best RO filter easy to install 0 TDS output
Trustpilot
1 day ago
5 days ago