Geekpure 4 Stage Portable Aquarium Reverse Osmosis RO Drinking Water Filtration System 100 GPD - with DI Filter TDS Close to 0 ppm

Easy to install, works perfect. Drain/clear water 50/50 so good for this cost, minimal leak and it was for the adapters (99.99% solved using Teflon), in about 9h 38 gal of clear water delivered, so it’s a real 100 GPD system.

Jan 20th 2026, I am ordering my 3rd unit for my master bath room. Oldest unit is 4 years old and works great, cheaper than buying the filters! CONTRARY to other reviews this unit is very fast but you may need a pressure tank. Excellent product! Great ro unit, flow rate and recovery higher than more expensive systems, works better with a tank. I have 2 units now! One in my home and one in my rv. Needs on/off control as it runs all the time without shutoff. I used a 13 volt solenoid in rv and pressure regulator in home.

You cant beat the vaule, works great! Instead of buying r/o water and dealing with carrying 5 gallon cans, just make at home. Great for small usage

Will not ever shut off! Dumps about 50 gallons a day. Sure, maybe it's small, maybe it's cheap, but you will spends hundreds in water bill.

works great, includes 3 different ways to hook it into your water line

First month used water test 0 ppm TDS, and over 1 month used TDS test over 310 ppm. after Changed geek pure filter.

First class. Best in price and performance. Not my first RO system, but the best I've owned. It takes my city water from 8+ pH to 6.0-6,2 with a TDS near ZERO and it makes over 20 gallons in just a few hours. Just have to supplement the minerals with "Replenish" and adjust the levels to your needs. Don't replace old spent $$ filters on your old RO System, step up and replace the whole system as a unit.

I love these filters. Great value for money and with a sink faucet adapter I use it to make my own reverse osmosis water. If you only use it for drinking they last for years without needing replacement according to my TDS meter. Just put it in your sink in the bathroom when filtering water so there are no spills and put the dirty water in the sink as well. Then I put the water jug in the shower/bathtub so that if I forget and it overflows in doesn't spill water. See how long it takes for the jug to fill with clean water and set an alarm. This is the most portable and easy installation and takes like 15 seconds to start to fill water and put the filter away after.

Hola soy de la ciudad de México , mi experiencia con este filtro de ósmosis es la siguiente: El primer día instale el filtro según el manual , pero me generó un garrafón de agua de 20 litros con TDS en 0 en 22 hrs , instale una bomba ( en México se les llama presurizador ) y funciona mucho mejor , logré generar 20 litros con TDS en 0 en 2:30 hrs . Conclusión: funciona tal y como se menciona en la descripción, pero si tienes que tener instalado una bomba de presurizacion para su correcto funcionamiento

Excellent RO unit, that is being used for Aquarium. 0ppm result, and generally takes around 50 mins for 10L. Unit has been very reliable so far. Excellent value for money.

Simple and easy installation. Very good results.

Installation un peu laborieuse, mode d’emploi très sommaire. Résultat apparemment concluant.

Highly recommend this. Took my tap water PPM down to 0. Fantastic. Very clean pure water, better than store bought.