--- product_id: 4514585 title: "Aquatic Life DI Color Changing Mixed Bed Resin Cartridge, Aquarium, Hydroponics" brand: "aquatic life" price: "¥9969" currency: JPY in_stock: true reviews_count: 13 category: "Aquatic Life" url: https://www.desertcart.jp/products/4514585-aquatic-life-di-color-changing-mixed-bed-resin-cartridge-aquarium store_origin: JP region: Japan --- # 0 TDS ultra-pure water Color-changing resin indicator Tool-free quick inline install Aquatic Life DI Color Changing Mixed Bed Resin Cartridge, Aquarium, Hydroponics **Brand:** aquatic life **Price:** ¥9969 **Availability:** ✅ In Stock ## Summary > 💧 Pure water, zero guesswork—upgrade your aquatic ecosystem today! ## Quick Answers - **What is this?** Aquatic Life DI Color Changing Mixed Bed Resin Cartridge, Aquarium, Hydroponics by aquatic life - **How much does it cost?** ¥9969 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/4514585-aquatic-life-di-color-changing-mixed-bed-resin-cartridge-aquarium) ## 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 - • **Smart Color Alert:** Resin shifts from blue to tan, so you never guess when it’s time to replace—always stay ahead. - • **Plug & Play Perfection:** Effortless inline installation with standard ¼” tubing and press fittings—no tools, no hassle. - • **Refillable & Sustainable:** Translucent cartridge with removable cap lets you refill resin, cutting waste and saving money. - • **Zero TDS, Zero Compromise:** Delivers perfectly deionized water for the most sensitive aquatic life and hydroponic setups. - • **Subscribe & Save Convenience:** Never run dry—automated deliveries keep your system optimized with extra savings on every order. ## Overview The Aquatic Life DI Color Changing Mixed Bed Resin Cartridge is a direct replacement for the RO Buddie +DI system, engineered to reduce Total Dissolved Solids (TDS) to zero. Featuring a smart color-changing resin that signals exhaustion, this cartridge ensures ultra-pure water for aquariums and hydroponics. Its easy inline design with tool-free installation and refillable housing offers both convenience and sustainability. Ideal for professionals seeking flawless water quality and hassle-free maintenance. ## Description Buy Aquatic Life DI Color Changing Mixed Bed Resin Cartridge, Aquarium, Hydroponics: Replacement Under-Sink Water Filters - desertcart.com ✓ FREE DELIVERY possible on eligible purchases Review: It really works! - I'm impressed! It actually reduced TDS from 56 to 2 TDS! Distilled water I bought shows 1. It leaked a bit first time I installed. But I put Teflon tape and is no longer leaking. I know it's not supposed to be used for drinking water, but I have to taste it! Water tasted better than the bottled distilled water. Also water is clearer! Very easy to use, like plug and play, seems durable and I wasn't expecting the unit resin is replaceable. So that is s big plus.. compatible with my ispring, uses 1/4 tubing that plugs in. Comes with brackets.. Pricewise it's not that cheap but it's not that expensive! Review: Check cap it was loose, but it works great! - Easy install on my RO system dropped my water TDS from 47 to 0 . ## Features - INLINE DI RESIN CARTRIDGE: Direct replacement for the Aquatic Life RO Buddie +DI system; This mixed-bed deionization filter reduces Total Dissolved Solids (TDS) to zero, giving you the purest water for aquariums - COLOR-CHANGING RESIN: Resin changes color from blue to tan when exhausted, so you’ll always know exactly when it’s time to replace - ULTRA-PURE WATER FOR AQUARIUMS: Removes the final dissolved minerals and debris after RO filtration, producing water that’s extra clean and gentle for sensitive fish and plants - EASY INLINE DESIGN, REFILLABLE HOUSING: Connects with standard ¼” tubing using press fittings at each end. Installs quickly into your RO Buddie +DI system without tools; he translucent cartridge comes with a removable cap so you can refill it with Aquatic Life bulk DI resin - SUBSCRIBE AND SAVE FOR CONVENIENCE: Never run out of filters—enroll in the Subscribe and Save program for automatic deliveries at your chosen frequency and enjoy extra savings with each order ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00DSP57BQ | | Allergen Information | Nut Free | | Best Sellers Rank | #17,785 in Pet Supplies ( See Top 100 in Pet Supplies ) #171 in Aquarium Filter Accessories | | Brand | Aquatic Life | | Brand Name | Aquatic Life | | Customer Reviews | 4.5 out of 5 stars 1,430 Reviews | | Global Trade Identification Number | 00810957012427 | | Included Components | Aquatic Life DI Color-Changing Mixed Bed Resin Cartridge for RO Buddie | | Item Form | Solid | | Item Type Name | Resin Cartridge | | Item Weight | 15.84 ounces | | Manufacturer | Aquatic Life LLC | | Manufacturer Part Number | 330242 | | Model Number | 330242 | | Number of Items | 1 | | Pet Type | Fish | | Target Species | Fish | | UPC | 810957016685 810957012427 | | Unit Count | 1 Count | | Warranty Description | Manufacturer Warranty | ## Product Details - **Brand:** Aquatic Life - **Item Form:** Solid - **Item Weight:** 15.84 ounces - **Manufacturer:** Aquatic Life LLC - **Unit Count:** 1 Count ## Images ![Aquatic Life DI Color Changing Mixed Bed Resin Cartridge, Aquarium, Hydroponics - Image 1](https://m.media-amazon.com/images/I/71ga4jV85dL.jpg) ![Aquatic Life DI Color Changing Mixed Bed Resin Cartridge, Aquarium, Hydroponics - Image 2](https://m.media-amazon.com/images/I/81-5jCUQnAL.jpg) ![Aquatic Life DI Color Changing Mixed Bed Resin Cartridge, Aquarium, Hydroponics - Image 3](https://m.media-amazon.com/images/I/71+8EGzyVTL.jpg) ![Aquatic Life DI Color Changing Mixed Bed Resin Cartridge, Aquarium, Hydroponics - Image 4](https://m.media-amazon.com/images/I/71-mlcR0TrL.jpg) ![Aquatic Life DI Color Changing Mixed Bed Resin Cartridge, Aquarium, Hydroponics - Image 5](https://m.media-amazon.com/images/I/81u+A5K2u5L.jpg) ## Available Options This product comes in different **Style** options. ## Questions & Answers **Q: There are 2 sizes of this product on a different website. Can anyone verify if this is the 21 or 31 cubic in. version?** A: I am unsure what u mean by 21/31 cubic in, I bought this cartilage for my 100 gallon per day aquatic life ro filter and have since put out hundreds of gallons of 0ppm water, it has started changing color but still has long way to go, without the di cartilage the filter puts out 15ppms with the intake water being just under 200ppm **Q: How often do i need to replace this cartridge?** A: It's refillable. Top cap is removable and replacement resin may be purchased much cheaper than a cartridge. Depends on amount of water passed through it as well as how contaminated it may be. **Q: Will I need to purchase any tubing or any other additional pieces aside from the RO Buddie itself?** A: Yes you will need extra tubing for the r/o buddie. I just got my r/o buddy a few days ago. Make sure you cut the tubing clean. Otherwise it will leak. first 10 gallons have been 0 ppm. And my saltwater tank looks amazing. **Q: My cartridge does not remotely look green, it's more like a shimmering black, purple, and blue. Anyone else had that problem?** A: Is it blue when new or it turned blue? Mine is green. I think if it's blue it's used. ## Customer Reviews ### ⭐⭐⭐⭐⭐ It really works! *by N***S on June 14, 2026* I'm impressed! It actually reduced TDS from 56 to 2 TDS! Distilled water I bought shows 1. It leaked a bit first time I installed. But I put Teflon tape and is no longer leaking. I know it's not supposed to be used for drinking water, but I have to taste it! Water tasted better than the bottled distilled water. Also water is clearer! Very easy to use, like plug and play, seems durable and I wasn't expecting the unit resin is replaceable. So that is s big plus.. compatible with my ispring, uses 1/4 tubing that plugs in. Comes with brackets.. Pricewise it's not that cheap but it's not that expensive! ### ⭐⭐⭐⭐⭐ Check cap it was loose, but it works great! *by J***. on February 11, 2026* Easy install on my RO system dropped my water TDS from 47 to 0 . ### ⭐⭐⭐⭐⭐ Solid choice for RO systems *by B***H on August 30, 2026* I’ve been using this product for years in addition to my Aqua ready system. In my experience it lasts way longer than the diy / refillable products for a fraction of the cost. ## Frequently Bought Together - Aquatic Life DI Color Changing Mixed Bed Resin Cartridge, Aquarium, Hydroponics - Aquatic Life RO Buddie Sediment Cartridge - AQUATICLIFE Inline RO Buddie Replacement Cartridges - Includes Carbon Block Filter, Sediment Cartridge and 50 GPD Membrane for RO/RODI Reverse Osmosis Deionization Water Filter System Units --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/4514585-aquatic-life-di-color-changing-mixed-bed-resin-cartridge-aquarium](https://www.desertcart.jp/products/4514585-aquatic-life-di-color-changing-mixed-bed-resin-cartridge-aquarium) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-09-05*