AquaticLife Mixed Bed Color Changing Bulk Deionization DI Resin Refill for Reverse Osmosis Water Filter for RO/DI System for Aquarium, 5 Liter

Often receive this product same day as ordered.Kinda expensive but quick delivery helps quell the pain of cost. I use it to treat well water for my fresh water aquariums. PPM here 400 + and this knocks it down to 0. I also use it to wash my solar panels and it leaves them spotless.

For 20 years, I've bought my NGCCDI resin from the same company I buy my RODI units. They carry good DI resin, which lasts ~4 months before it is exhausted.I thought I'd try this brand. I've read reviews here that it doesn't last long before depleted. Guess I'll find out.It took all of 10 minutes to complete the following, which has always been my method; Remove DI canister from RODI unit, remove an endcap and rinse it out with RODI fresh...I always do mine in the sink over the disposal. (so any falling beads are easily disposed of) I fill with a clean spoon, tamp it down with my fingers, add RODI fresh, and repeat the procedure until it no longer settles, leaving no space. I then rinse the threads and recap the canister.Twist tie the bag well, put it back in the mylar pouch, and store it in a dry, cool, dark place until needed again...Lastly, I run the RODI unit into a bucket and let it run out ~3 to 5 gallons of purified ZERO TDS water.

Before I found this I was running my DI resin on my RO system way too long. I ordered the 5L one and it lasted 2 years... I would highly recommend this since its color changing and exactly the same thing without a major marketing name on it.

The last 5 pound bag of resin I bought from another company and it seems like the resin went bad after 8 months of storage. This one is fine, it dropped my 15 TDS water to Zero with no problems and so far the canister is being used up fairly slowly. Just a warning, the bags on these things never seem to seal properly once they are opened. That is what killed my last bag. Once the Anions and Cations in the resin are exposed to humidity for to long they just stop working. So my advice is buy a high quality reusabele Vacuum seal bag and put the resin bag in it and vacuum out the air. If you have lots of shelf space you can buy a properly sealed airtight Jar and pour it into that. Just do not depend on the Ziplock type seal that comes with these 5 pound bags.

I've purchased this 10+ times and I'll keep coming back, unless I find a better price elsewhere. I do mobile detailing in AZ and the water evaporates as fast as you apply it in the hot summer days, using this in my Griots Water Purifier has eliminated water spots 100% and I contribute the clean water to the amazing results I get.

I use this for my 180g saltwater tank. The color changing resin lasts as long as expected for my particular setup (1 sediment filter, 2 carbon filters, 2 resins). I measure the water quality going into the resin and coming out of the res with an inline dual TDS PPM monitor. I already know that the tap water coming into filters needs help so I don't bother to measure the PPM coming into the system, only what is leaving the filters stage. This helps me to know if I need to change the filters or if I need to change the resin. For the quantity and pricing, I find this to be of value.Side Note - it comes packaged in two resealable bags, plus inside a sealed light blocking bag. I use a vacuum sealer to reseal the light blocking bag to retain the resin moisture and store it in a closet. This prolongs the life of the unused resin.

I use it for washing my overpriced vehicles. Its really the only way to wash a black truck and not have to worry about water spots. I noticed a few people complain about the mylar bag having a hole in it. What these folks failed to mention is the resin was sealed in 5 other bags inside that bag. I personally have not seen any other place take the time to do that. As far as longevity of the product. Its probably the best resin or at least just as good as any top brand resin you will buy. Ive washed my very large truck and suv several times (complete wash) and still getting zero tds without a prefilter. For the quality and quantity its a good deal to me.

Thanks noe TDS 0