iSpringRCC7D 75 GPD Reverse Osmosis/Deionization Water Filter System, Removes TDS, Chlorine, Fluoride, Lead, and More, Fits Under Sink

The media could not be loaded. I bought this to make pure water for my saltwater marine reef tank as corals are super sensitive (and expensive) and I strictly needed ZERO TDS water, not 1, not 2, etc. but 0.I purchased the 5 stage system with the pump and honestly no regrets. I watched a video of how to install it while waiting for the delivery and gave a quick read to the (really great!!) Instruction paper as well and it was child's play to put it all together. I flushed the first 3 stages as instructed and after that when I hooked up the last 2 stages it pretty much immediately went to zero TDS and since then I already produced a 100 litres of clean pure water for my aquarium water change and top up. That is a really good indicator of how good this system is as mine is set up outside in 7-8 °C and my water pressure isn't particularly great either.Previously I bought a unit from somewhere else for half the price but it was only giving me headache and an unacceptable value of 30 TDS output. So I am very happy with this product from iSpring and I still have a bunch of bits and parts leftover as spare should I do something more complicated with this system in the future. Initially I was worried as some reviews mentioned bad leaks and poor build quality but they must have gotten really unlucky or didn't follow the instructions. Me who came from owning a cheaper unit, I have to say that this iSpring product is very robust and solid. Build quality is perfect for what it is, so don't worry about those few bad reviews.The only criticism I could give is that the pipes provided are quite short since these are intended to be used under your sink but I needed longer ones to reach to different spots outside but these pipes are dirt cheap so I'll take this downside.