My experience with this RODI filter has been really good so far. I've had it for about 3 months and I've probably used it to fill a 5 gallon jug about 20 times, that's about 100 gallons of pure water and I'm still getting 0ppm readings, and that's with my tap water 420 ppm. This is my second RODI on a budget, I didn't want to buy it back in 2016 because of the many reviews. My first was a POQ-4B-50 from the PureWaterDirect Club at Revain and it worked really well initially, but after changing cartridges and resin it didn't seem to last very long. I think it helped that I installed it under the sink and added an adapter valve (LFP-467CS) so I could run it under the sink. It wasn't too difficult to install. I am only a buyer of these products. I put a plastic container underneath but so far there have been no leaks. I use RODI for my reef tank so I no longer have to lug 5 gallon jugs out of the store vending machine. Hope that helps!
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