--- product_id: 133444989 title: "MBD-30 Color Changing - Indicating DI Resin Replacement Refill (Deionization) - 4 lbs (64 Ounces) Sold by Oceanic Water Systems." brand: "resintech" price: "644 Lei" currency: RON in_stock: true reviews_count: 8 category: "Resin Tech" url: https://www.desertcart.ro/products/133444989-mbd-30-color-changing-indicating-di-resin-replacement-refill-deionization store_origin: RO region: Romania --- # Color-changing resin indicator 100% TDS removal 4 lbs refill, eco-friendly savings MBD-30 Color Changing - Indicating DI Resin Replacement Refill (Deionization) - 4 lbs (64 Ounces) Sold by Oceanic Water Systems. **Brand:** resintech **Price:** 644 Lei **Availability:** ✅ In Stock ## Summary > 💧 Stay ahead of impurities with color-smart purity! ## Quick Answers - **What is this?** MBD-30 Color Changing - Indicating DI Resin Replacement Refill (Deionization) - 4 lbs (64 Ounces) Sold by Oceanic Water Systems. by resintech - **How much does it cost?** 644 Lei with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/133444989-mbd-30-color-changing-indicating-di-resin-replacement-refill-deionization) ## Best For - resintech enthusiasts ## Why This Product - Trusted resintech brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Vacuum-Sealed Freshness:** Packaged airtight to preserve resin potency and performance until first use. - • **Ultra-Pure Water Every Time:** Eliminate 100% of Total Dissolved Solids post-RO/DI for crystal-clear water. - • **Visual Resin Life Indicator:** Color shifts from blue to amber, so you never guess when to replace your resin. - • **Aquarium & Auto-Detailing Ready:** Safe for delicate aquatic life and perfect for spot-free car and window rinses. - • **Universal Cartridge Compatibility:** Fits all refillable DI cartridges—save money and reduce waste effortlessly. ## Overview The MBD-30 Color Changing DI Resin by Oceanic Water Systems delivers premium mixed bed deionization with a built-in color indicator that shifts from blue to amber to signal resin exhaustion. This 4-pound vacuum-sealed refill pack ensures 100% removal of Total Dissolved Solids when used after RO/DI systems, is compatible with all refillable DI cartridges, and is safe for aquariums and precision rinsing applications. ## Description 4 lbs of Resintech MBD-30 Color Changing Nuclear Grade DI Resin. We recommend the color changing resin because it gives you an idea of when to start checking your TDS meter more often. We vacuum package our resin, this removes virtually all of the carbon dioxide within the packaging itself. The resin changes from Blue to light brown as it is depleted. The color indicator in DI resin is just a visual indicator of when the resin is close to exhausting and should not be considered and accurate representation of when the resin is fully depleted, it can often be good much longer. We strongly suggest using inline TDS meters to definitively tell you when it is time to change your resin. Please note: COLOR CHANGE will occur ONLY WHEN DI IS EXHAUSTED. If you DO NOT see color change, then the DI is NOT EXHAUSTED, and is still viable. Packaged in a CLEAR Airtight Sealed Bag. Review: Satisfied aquarium hobbyist - Indeed use for my family’s 160 gallon discus display. Battling mineral/tds creep from required top offs with heavy water changes just did not get to my preferred soft water parameters. Used 16 once’s of media in a micro mesh bag with a in-sump media reactor as a starting point. Initial discharge test was 42 tds from reactor after 12-15 hours media was exhausted. Lowered aquariums water column 50 tds points and surprised by 10-15 ppm in lowered nitrates used api no3 test kit noticeable color change in the glass tube! ORP increased by 28 mv. Moving forward ATO will have demineralized water in the holding tank. Nice tool to add to my aquarium hobby ion exchange water polishing. Do recommend this product will purchase again. Review: Fantastic deionizing, great color change, excellent value - If you’re looking for DI resin for supporting your reef aquarium, I would recommend this. I have very hard and iron rich well water. I have been using a basic pre-filter, 5micron carbon, and 1micron carbon pre-filter. My system has a permeat pump as well as a booster pump. So far, I have gone through 2 cartridge refills with this resin. I’ve had good success at storing the resin with a vacuum packer. The color change has been easy to read. Despite my hard iron water, I have been producing surprisingly low conductivity water. ## Features - ULTRA PURE TDS FREE WATER – Dramatically reduce 100% of Total Dissolved Solids (TDS) from your water when used after a Reverse Osmosis/DI system. - COLOR-CHANGING INDICATOR – The Resintech MBD30 DI Mixed Bed Ion Exchange color-changing resin changes color to clearly indicate when it's time to replace your media. When exhausted, the resin changes from Blue to amber, leaving out the guesswork of when to replace the media to ensure your water stays ultra-pure. Our resin is supplied DIRECTLY from ResinTech. - UNBEATABLE PERFORMANCE - Premium DI media, safe for your aquariums, and exceptional performance for a spot-free rinse for car washes and windows. - REFILL & SAVE – 100% compatible with any manufacturer DI Refillable cartridges. Refill DI cartridges of any size and save money. This is a 4 lb package of Color Changing Deionizing Resin, packaged in a Clear, Sealed bag. - PREMIUM QUALITY - 100% Mixed Bed DI exchange resin. None of our DI resin is regenerated, ensuring you get premium quality and no contaminants in your aquarium. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07NPR7ZMB | | ASIN | B07NPR7ZMB | | Best Sellers Rank | #100,926 in Pet Supplies ( See Top 100 in Pet Supplies ) #494 in Aquarium Filters | | Brand Name | ResinTech | | Customer Reviews | 4.6 4.6 out of 5 stars (104) | | Date First Available | March 24, 2019 | | Date First Available | March 24, 2019 | | Item Weight | 4 Pounds | | Item Weight | 4 Pounds | | Item model number | CCDIRES | | Item model number | CCDIRES | | Manufacturer | Oceanic Water Systems | | Manufacturer | Oceanic Water Systems | | Model Name | CCDIRES | | Target Audience Keyword | Fish | ## Images ![MBD-30 Color Changing - Indicating DI Resin Replacement Refill (Deionization) - 4 lbs (64 Ounces) Sold by Oceanic Water Systems. - Image 1](https://m.media-amazon.com/images/I/51T+2qQftNL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Satisfied aquarium hobbyist *by K***Y on September 21, 2022* Indeed use for my family’s 160 gallon discus display. Battling mineral/tds creep from required top offs with heavy water changes just did not get to my preferred soft water parameters. Used 16 once’s of media in a micro mesh bag with a in-sump media reactor as a starting point. Initial discharge test was 42 tds from reactor after 12-15 hours media was exhausted. Lowered aquariums water column 50 tds points and surprised by 10-15 ppm in lowered nitrates used api no3 test kit noticeable color change in the glass tube! ORP increased by 28 mv. Moving forward ATO will have demineralized water in the holding tank. Nice tool to add to my aquarium hobby ion exchange water polishing. Do recommend this product will purchase again. ### ⭐⭐⭐⭐⭐ Fantastic deionizing, great color change, excellent value *by J***E on February 25, 2022* If you’re looking for DI resin for supporting your reef aquarium, I would recommend this. I have very hard and iron rich well water. I have been using a basic pre-filter, 5micron carbon, and 1micron carbon pre-filter. My system has a permeat pump as well as a booster pump. So far, I have gone through 2 cartridge refills with this resin. I’ve had good success at storing the resin with a vacuum packer. The color change has been easy to read. Despite my hard iron water, I have been producing surprisingly low conductivity water. ### ⭐⭐⭐⭐⭐ For spot-free rinsing after washing the car *by T***X on November 2, 2025* I actually use this in my spot-free rinse setup for car washing. I have two 10-inch canisters filled with this resin and it truly delivers spot-free rinsing. The color change gradually creeps up the canisters (they're clear) to let me know when it's time for a replacement. Love this stuff. --- ## 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.ro/products/133444989-mbd-30-color-changing-indicating-di-resin-replacement-refill-deionization](https://www.desertcart.ro/products/133444989-mbd-30-color-changing-indicating-di-resin-replacement-refill-deionization) --- *Product available on Desertcart Romania* *Store origin: RO* *Last updated: 2026-05-03*