LiquaGen - 6 Stage Portable Dual Use Drinking and Aquarium Reef/Deionization | Reverse Osmosis Water Filter System RO/DI | w/pH Alkaline Mineral Restoration Filter | 0 TDS | 150 GPD

Works good to remove all impurities from water. My only issue was having to take apart the entire unit and replace the thread tape because after hooking it up everything that was put together by the manufacturer leaked. It was simple to fix and there is a small amount of Teflon tape included to fix it with but it seems like any connections made at the store or during manufacturing should be tight and should not leak. Either don't partially assemble this unit before shipping or make sure it don't leak if you are gonna partially assemble. Otherwise the unit works great and once it's been fully taken apart and replaced with thread tape to stop any leaks it is perfect. It makes a 5 gallon bucket of 0 TDS Water in 90mins and it has the mineralization and pH filters for drinking water (it taste like Dasani Ro water). This unit would be very easy to install if it didn't require to be taken apart and resealed. It took 5 mins to screw a splitter on my washer supply line and install this unit in my utility room. Then it took 30 mins taking it apart wrapping all the(pre-installed) fittings with tape and then reinstalling.

For the price this is an amazing RO/DI unit. I put a TDS meter on it and it easily reduces the inbound 190 PPM of my city water to 0 after the DI stage. After the final carbon/ALK filter it rises to 19 PPM with a PH of 8.6 and ALK of 9.4. A tad high for a reef tank but the PH will come down in storage. Setup was straight forward, although the supplied feed and waste lines are very short. Please keep this in mind if mounting more than a foot or two from the water spigot and drains, otherwise you will need to purchase extra hoses. My only complaints with it were none of the hose barbs, and retaining clips were installed, and the DI and ALK filters were installed backwards. I had to get teflon tape and replumb it, I can't knock that for how well it performs. With 50PSI on the inlet this unit will filter 5 gallons through all 6 stages in about 40 minutes.

If you are looking to buy an RO for the first time I'm sure your head is spinning from trying to figure out what one will work best for you.I have this one connected in my laundry room vs ones that fill a small reservoir under the sink. In the picture you can see I just diverted cold water from my washing machine. This one has no reservoir that stores water for ease in filling up a few glasses of water at a time. Its a slow dribble, HOWEVER, I'm able to fill large water containers which I have for both my plants (0 ppm), and my drinking water (50ish ppm). Usually takes about an hour and a half or so to fill a 7 gallon water container. I installed a float valve (super easy) inside my containers to auto shutoff when they are filled. This is a great product, and I would recommend for gardeners, and those looking to stop drinking well water.

I bought this for my reef tank. If you don't want to make drinking water you can get the 5 stage unit. I removed the water cartridge. Checked the tubing connections, pretty easy to follow where everthing belongs. The first DI cartrige that came with the unit was not 100% full of resin. Make sure you check that. You can buy extra. It only made about 40 gallons of 0 TDS water, then I had to shake to get the resin to flow properly. Finally I bought a extra cartridge and it made 90 gallons of 0 TDS water with no problem. If you don't know it takes a while and you'll go through about 3 gallons of waste water to make a gallon. This was for a empty tank. Now that I'll only be doing water changes I won't need to produce so much water. I've seen some have questioned the waste water valve. Open it to flush the RO membrane, otherwise close and the constant flow is the waste water that will need to be drained the entire time making water. Nice unit, clean and easy to maintain.

This filter is legit, works like a charm! It actually dropped my local tap water from 600+ ppms to literally 0 ppms. The drinking water actually is drinkable as well, although I would let the water run from it a bit, otherwise you will get a nasty earthy after taste.One setback however is that the hose connector they sent with the filter came in shaved (as it was fully plastic for some reason) and would waste a large amount of water. Normally this would affect the review of the product, but the customer service from these guys are great. All I did was send an email saying that my hose connector came in damaged, did not even send a picture but they still sent me a new one, and guess what?They sent the more expensive brass version; no more leaks!

We needed a good RO/DI for pure water for our large reef tank. We ordered this one because of good reviews and the cost seemed very competitive. We received it and the water it produces is perfect. No TDS, no anything. One of the canisters was leaking, however. After trying a few things we determined it must just be a defect. I contacted Liquagen and they immediately agreed to send a replacement and were extremely polite and helpful. I spoke with Derrick. Awesome customer service. I would not hesitate to buy any of their products. Thank you Derrick and Liquagen !

I was pleasantly surprised at how easy this gizmo was to set up. Fifteen minutes and I was running water through it. Not their fault it took me two and a half hours to put a Y valve on my washing machine inlet pipe in the washroom. After that, it was a breeze. Ran the flush for 30 minutes per the instructions and presto, RO-DI water. Three unfortunates I noticed. One, the filters are not NSF certified. Makes me wonder why? Two, if you plan to mount it on a wall, there are no mounting screws. The bracket is there but no screws. I thought that was a bit cheezy on the manufacturer’s part. Three, the 1/4” hoses, red, blue, black and white, are way too short. I’m going to have to replace them all except the red one due to the distance from my incredibly difficult to install Y valve and where I plan to mount the gizmo once I go buy mounting screws from the hardware store. Seriously fellas, how much would a couple of screws and some wall anchors have cost you? Twenty cents?

Been using for years. I did make the mistake of waiting to long to replace resin and other filters but so far it has been good for my reef tank making RoDi water. Customer service is also very good when I had some questions