MBD-30 Color Changing - Indicating DI Resin Replacement Refill (Deionization) - 4 lbs (64 Ounces) Sold by Oceanic Water Systems.

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.

• 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.