---
product_id: 33446114
title: "Aquatic Life RO Buddie 4-Stage Reverse Osmosis Deionization Water Filter System RO/DI Filtration Units for Aquarium, 50 GPD"
brand: "aquatic life"
price: "₩234699"
currency: KRW
in_stock: true
reviews_count: 9
category: "Aquatic Life"
url: https://www.desertcart.kr/products/33446114-aquatic-life-ro-buddie-4-stage-reverse-osmosis-deionization-water
store_origin: KR
region: South Korea
---

# 50 GPD ultra-pure output TDS reduction to 0.01% 4-stage advanced filtration Aquatic Life RO Buddie 4-Stage Reverse Osmosis Deionization Water Filter System RO/DI Filtration Units for Aquarium, 50 GPD

**Brand:** aquatic life
**Price:** ₩234699
**Availability:** ✅ In Stock

## Summary

> 💧 Elevate your aquarium game with water so pure, your fish will thank you!

## Quick Answers

- **What is this?** Aquatic Life RO Buddie 4-Stage Reverse Osmosis Deionization Water Filter System RO/DI Filtration Units for Aquarium, 50 GPD by aquatic life
- **How much does it cost?** ₩234699 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/33446114-aquatic-life-ro-buddie-4-stage-reverse-osmosis-deionization-water)

## Best For

- aquatic life enthusiasts

## Why This Product

- Trusted aquatic life brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact & Space-Savvy Design:** Sleek, wall-mountable unit fits effortlessly in tight spaces—perfect for modern homes and hobbyists.
- • **Crystal-Clear Aquarium Water:** Delivers up to 50 gallons/day of pristine RO/DI water for flawless aquatic environments.
- • **Precision 4-Stage Filtration:** Sediment, carbon block, RO membrane, and color-changing DI resin ensure near-zero TDS levels.
- • **Effortless Setup & Maintenance:** Quick installation with included hoses; easy cartridge swaps keep your system running peak performance.
- • **Customizable Flow & Upgradeable:** Boost output by swapping flow restrictors—scale your system as your aquatic passion grows.

## Overview

The Aquatic Life RO Buddie 4-Stage Reverse Osmosis Deionization System delivers up to 50 gallons per day of ultra-pure water by combining sediment, carbon block, RO membrane, and DI resin filtration. Compact and wall-mountable, it’s designed for aquarium enthusiasts seeking precise water quality control with easy installation and maintenance. Ideal for reducing TDS to near zero, it supports healthier aquatic life and customizable flow rates for growing setups.

## Description

desertcart.com : Aquatic Life RO Buddie 4-Stage Reverse Osmosis Deionization Water Filter System RO/DI Filtration Units for Aquarium, 50 GPD : Livestock Equipment : Pet Supplies

Review: Compact RO/DI System That’s Small but Effective - Size & Setup: The Aquatic Life RO Buddie 4-stage RO/DI unit is compact and easy to set up, making it ideal for smaller spaces or hobbyists who don’t need a large permanent system. Performance & Water Quality: Despite its size, it’s very effective, producing clean, high-quality RO/DI water suitable for aquariums and other uses. Maintenance Considerations: Because of the smaller filters, you’ll need to change the cartridges more frequently, depending on your incoming water quality and total gallons processed. Final Verdict: If you want a small, effective RO/DI system, this unit does the job well. Just be aware of the more frequent filter changes due to its compact design.
Review: Get a hose splitter and you can run this off of your laundry room water! - I purchased the RO Buddie 4-stage RO/DI 50 GPD filter. This is for my small freshwater setup which includes seven tanks of varying volumes with a total volume of just under 100 gallons. I went with the RODI and not just RO system because I am trying to decrease the alkalinity of my water. So far so good after filtering 10 gallons of RO/DI water. It's very easy to set up and my water parameters have come out excellent with zero PPM TDS and zero EC (see attached photos, the meter was calibrated today). I live in Coastal Georgia and have moderately soft water parameters from the tap at around 150 PPM TDS (total dissolved solids) with a significant amount of EC (electrical conductivity) due to the high amount of minerals in the water. So basically very low sediment but high mineralization and somewhat moderate GH and KH. I have had a hard time keeping my South American tanks at good parameters for my tetras to breed and this will help immensely if it continues to work as it has so far. A Few Tips: - tighten the deionization filter cap before you install, I had a small leak as mine was somewhat loose but that was easy to fix and find and I just tightened the cap of the actual filter body itself and the leak stopped. To do it correctly I took all the hoses out and tightened it that way so I would not torque the hose connections. - this can be run off of any hose or even many kitchen and bathroom sink setups if you take out the aerator from your faucet. I am personally running it off of my laundry room and it's running beautifully as there is both a supply of cold water and a drain for the wastewater. - if you're going to install it in your laundry room all you need is a t-joint hose splitter or some other sort of double hose splitter that fits the receptacle for your washing machines supply water and gray water drain (see attached photos of my setup, everyone's will vary and I had to measure mine specifically as there are a huge variety of hose splitters) - if you are are doing a laundry room setup like mine where you can mount it close to the washing machine then the amount of hose provided in the kit will be more than sufficient. However if you are doing some other sort of setup you may want to buy additional hose, as you will need not just the proper amount of hose for the treated water but also the appropriate length of hose for wastewater. You could of course use a bucket but if you want to appropriately drain it to a sink or drain, getting additional hose maybe necessary. - if you are using this for a freshwater setup like I am you must absolutely get an additive that will keep the GH and KH at appropriate levels. RODI water by itself will kill fish. - Read the darn instructions. For a cheap system like this they are actually fairly detailed and obviously written by somebody who speaks English fluently. - having a solid set of channel locks or a wrench that will fit into a small area, as well as Teflon tape for the female ends of the threaded connections, will help reduce the potential for leaks. I am on city water that withdraws from a river and and underground aquifer and it is at a fairly high PSI as I live only 2 mi from the treatment center. All in all I am really pleased so far as this is the least expensive system I could find. This would not be an appropriate system for drinking water as the pressure/supply would not be great enough to fill a glass in a reasonable amount of time. Right now I am averaging about 5 gallons of treated water every 90 minutes (around 80 GPD) which is far above the 50 gallons per day that the system rated for, although I expect that to eventually go down as the sediment and carbon filters begin to fill with debris. That said, I am currently probably experiencing closer to a 75 GPD or even 100 GPD system which got $70 is impossible to beat. As an added bonus when the RO finally wears out I can replace it with one of their 75 GPD or 100 GPD rated filters so long as I swap out the The 450cc flow restrictor for an 800cc flow restrictor, thus functionally increasing the output of the system. This will of course wear out the DI filter faster. I will update this review if anything changes but so far I am pleased. For some reason desertcart's AI wants me to comment on the noise level which is silly for a system of this low of a flow rate. If it's making any noise louder than a few gurgles and bubbling sounds that you can only hear when you are right next to it then there is probably something wrong with the system like over pressure or an incorrectly installed hose connection which is creating suction and/or air intrusion somewhere. So, tldr, it doesn't make any noise. In summary, it's a cheap effective system that took me about 20 minutes to install with just the parts in the box and the hose splitter I bought. Hard to go wrong at this price point. I would recommend this to anyone who needs a small amount of water for weekly or bi-weekly water changes and is trying to keep the GH and KH of the water column down (i.e. slightly acidic or neutral). note: The picture system has not been fastened to my wall yet nor have I done any hose management so bear that in mind as well.

## Features

- 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.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00204CQF6 |
| ASIN  | B00204CQF6 |
| Age Range Description | All Ages |
| Best Sellers Rank | #6,462 in Pet Supplies ( See Top 100 in Pet Supplies ) #13 in Aquarium Filters |
| Brand | Aquatic Life |
| Brand Name | Aquatic Life |
| Color | White |
| Customer Reviews | 4.3 4.3 out of 5 stars (6,342) |
| Date First Available | August 19, 2004 |
| Date First Available  | August 19, 2004 |
| Department | all ages, unisex |
| Department  | all ages, unisex |
| Global Trade Identification Number | 00810957010195 |
| Installation Type | Wall Mount |
| Is Discontinued By Manufacturer  | No |
| Item Dimensions LxWxH | 13.75 x 7.5 x 6 inches |
| Item Package Dimensions L x W x H | 16.02 x 10.24 x 5.39 inches |
| Item Weight | 3.9 pounds |
| Item model number | 540019 |
| Item model number  | 540019 |
| Manufacturer | Aquatic Life LLC |
| Manufacturer  | Aquatic Life LLC |
| Maximum Flow Rate | 180 Liters Per Day |
| Model Name | 540019 |
| Number of Items | 1 |
| Package Information | Cartridges |
| Power Source | Corded Electric |
| Product Dimensions | 13.75"L x 7.5"W x 6"H |
| Product Dimensions  | 13.75 x 7.5 x 6 inches; 3.9 Pounds |
| Size | 50-Gallon Four stage |
| Special Feature | Compact, Portable |
| Specific Uses for Product | Active |
| Target Audience Keyword | fish |
| UPC | 810957010195 |
| Upper Temperature Rating | 105 Degrees Fahrenheit |
| Warranty Description | 1-Year Limited |

## Product Details

- **Brand:** Aquatic Life
- **Capacity:** 50 Gallons
- **Included Components:** RO Buddie Four Stage Reverse Osmosis System Cartridge
- **Installation Type:** Wall Mount
- **Material:** Sediment, Carbon, RO Membrane, DI Resin
- **Package Information:** Cartridges
- **Power Source:** Corded Electric
- **Product Dimensions:** 13.75"L x 7.5"W x 6"H
- **Purification Method:** Deionization
- **Special Feature:** Compact, Portable

## Images

![Aquatic Life RO Buddie 4-Stage Reverse Osmosis Deionization Water Filter System RO/DI Filtration Units for Aquarium, 50 GPD - Image 1](https://m.media-amazon.com/images/I/71cDsgZkZfL.jpg)

## Questions & Answers

**Q: How often should I replace the filters?**
A: Sediment and carbon filters typically last 3-6 months. RO membranes last 1-2 years depending on usage. DI resin should be replaced when it changes color.

**Q: Can I use RO Buddie for drinking water?**
A: No

**Q: What is TDS, and why is zero TDS important?**
A: TDS (Total Dissolved Solids) measures minerals, salts, and impurities in water. Zero TDS means the water is completely pure, leaving no spots or residue after drying - ideal for a spotless rinse.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Compact RO/DI System That’s Small but Effective
*by M***O on January 2, 2026*

Size & Setup: The Aquatic Life RO Buddie 4-stage RO/DI unit is compact and easy to set up, making it ideal for smaller spaces or hobbyists who don’t need a large permanent system. Performance & Water Quality: Despite its size, it’s very effective, producing clean, high-quality RO/DI water suitable for aquariums and other uses. Maintenance Considerations: Because of the smaller filters, you’ll need to change the cartridges more frequently, depending on your incoming water quality and total gallons processed. Final Verdict: If you want a small, effective RO/DI system, this unit does the job well. Just be aware of the more frequent filter changes due to its compact design.

### ⭐⭐⭐⭐⭐ Get a hose splitter and you can run this off of your laundry room water!
*by D***N on October 25, 2025*

I purchased the RO Buddie 4-stage RO/DI 50 GPD filter. This is for my small freshwater setup which includes seven tanks of varying volumes with a total volume of just under 100 gallons. I went with the RODI and not just RO system because I am trying to decrease the alkalinity of my water. So far so good after filtering 10 gallons of RO/DI water. It's very easy to set up and my water parameters have come out excellent with zero PPM TDS and zero EC (see attached photos, the meter was calibrated today). I live in Coastal Georgia and have moderately soft water parameters from the tap at around 150 PPM TDS (total dissolved solids) with a significant amount of EC (electrical conductivity) due to the high amount of minerals in the water. So basically very low sediment but high mineralization and somewhat moderate GH and KH. I have had a hard time keeping my South American tanks at good parameters for my tetras to breed and this will help immensely if it continues to work as it has so far. A Few Tips: - tighten the deionization filter cap before you install, I had a small leak as mine was somewhat loose but that was easy to fix and find and I just tightened the cap of the actual filter body itself and the leak stopped. To do it correctly I took all the hoses out and tightened it that way so I would not torque the hose connections. - this can be run off of any hose or even many kitchen and bathroom sink setups if you take out the aerator from your faucet. I am personally running it off of my laundry room and it's running beautifully as there is both a supply of cold water and a drain for the wastewater. - if you're going to install it in your laundry room all you need is a t-joint hose splitter or some other sort of double hose splitter that fits the receptacle for your washing machines supply water and gray water drain (see attached photos of my setup, everyone's will vary and I had to measure mine specifically as there are a huge variety of hose splitters) - if you are are doing a laundry room setup like mine where you can mount it close to the washing machine then the amount of hose provided in the kit will be more than sufficient. However if you are doing some other sort of setup you may want to buy additional hose, as you will need not just the proper amount of hose for the treated water but also the appropriate length of hose for wastewater. You could of course use a bucket but if you want to appropriately drain it to a sink or drain, getting additional hose maybe necessary. - if you are using this for a freshwater setup like I am you must absolutely get an additive that will keep the GH and KH at appropriate levels. RODI water by itself will kill fish. - Read the darn instructions. For a cheap system like this they are actually fairly detailed and obviously written by somebody who speaks English fluently. - having a solid set of channel locks or a wrench that will fit into a small area, as well as Teflon tape for the female ends of the threaded connections, will help reduce the potential for leaks. I am on city water that withdraws from a river and and underground aquifer and it is at a fairly high PSI as I live only 2 mi from the treatment center. All in all I am really pleased so far as this is the least expensive system I could find. This would not be an appropriate system for drinking water as the pressure/supply would not be great enough to fill a glass in a reasonable amount of time. Right now I am averaging about 5 gallons of treated water every 90 minutes (around 80 GPD) which is far above the 50 gallons per day that the system rated for, although I expect that to eventually go down as the sediment and carbon filters begin to fill with debris. That said, I am currently probably experiencing closer to a 75 GPD or even 100 GPD system which got $70 is impossible to beat. As an added bonus when the RO finally wears out I can replace it with one of their 75 GPD or 100 GPD rated filters so long as I swap out the The 450cc flow restrictor for an 800cc flow restrictor, thus functionally increasing the output of the system. This will of course wear out the DI filter faster. I will update this review if anything changes but so far I am pleased. For some reason Amazon's AI wants me to comment on the noise level which is silly for a system of this low of a flow rate. If it's making any noise louder than a few gurgles and bubbling sounds that you can only hear when you are right next to it then there is probably something wrong with the system like over pressure or an incorrectly installed hose connection which is creating suction and/or air intrusion somewhere. So, tldr, it doesn't make any noise. In summary, it's a cheap effective system that took me about 20 minutes to install with just the parts in the box and the hose splitter I bought. Hard to go wrong at this price point. I would recommend this to anyone who needs a small amount of water for weekly or bi-weekly water changes and is trying to keep the GH and KH of the water column down (i.e. slightly acidic or neutral). note: The picture system has not been fastened to my wall yet nor have I done any hose management so bear that in mind as well.

### ⭐⭐⭐⭐⭐ What can i say its a great RO filter at a great price!
*by G***O on November 12, 2025*

I dont see why someone could write a bad review on this RO aquatic filter...... it works like a dream, 2:1 wast water, 10 minutes to connect to water supply and mount. What can I say it works like a dream. I use it for a hydroponic setup on a 4×8 flood table with 28 plants in 3 gallon fabric pots it so far it works perfectly... time will tell if it holds up but for the price and performance I'm extremely happy with my purchase... I spent hours looking at all the different RO water filter on Amazon and I finally decided on this one and I'm happy I did. I purchased a float valve separately to have automatic shutoff on my water tank to complete my system. With automatic water feeding and the float valve the system pretty much runs itself. Hope this review helps someone else with there RO water filter decision. If i run into any problem in the future I'll be sure to report back.

## Frequently Bought Together

- Aquatic Life RO Buddie 4-Stage Reverse Osmosis Deionization Water Filter System RO/DI Filtration Units for Aquarium, 50 GPD
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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-01-24*