AR-122 6-stage RO+DI Aquarium Reef Reverse Osmosis Water System 150 GPD New Complete

I bought this 6 Stage RODI in hopes that I could save the 3 hr weekly round trip to the "Local Fish Store". I have a large saltwater aquarium and a weekly water change is not only important, it's a necessity!!Besides of saving me the time and cost of the weekly trip my testing of the RODI water from my LFS and from this RODI unit proved that this was a wise investment. TDS of the LFS water was running between 15 and 35 ppm. I've now made over 100 gallons of RODI water and the TDS of the water from this RODI system is always ZERO!!For my saltwater reefer friends...this was recommended to me by another reefer online. I'M SOOO GLAD I TOOK HIS ADVICE!!I'll be honest, I'm fairly handy, but plumbing isn't my strong suit. However, installation was a breeze due to the excellent instructions.I HIGHLY RECOMMEND THIS RODI SYSTEM!NOTE: another reviewer said, "Update: buying from koolermax/filter direct has a high shipping charge and it is hard to find anywhere else. Thought I could get a standard size but nope... this is the printer pricing scheme all over with the system being a loss leader I think. Im considering getting a different RODI for standard sizes."This is NOT TRUE. The AR-122 uses standard filter sizes. I purchase all filters and DI resin via Amazon sellers. Everything is standard and no special sizes are needed.

After extensive research and price consideration I am very happy with my selection, fast shipping and it comes with everything you may need depending of installation you may need extra tubbing but very inexpensive at homedepot, the fittings are of high quality the system is very sturdy and looks great there is not a single drop of water leaking my TDS are at zero (0). I am very happy with the product and the price. The main use is for Saltwater aquarium and it works great with standard cartridges.

Everything came perfectly, I have been running the RO/DI for a month with no issues and it has been giving my reef tank pristine water quality. Arrived on time and no issues except one little plastic connector was broken but I think I probably broke it taking it out of the package. However, there were extra pieces in the box to replace it and if you need to get any replacement fittings, they have everything on their website. I bought a 2 way switch valve for our laundry cold water output and hooked the RO/DI system up to that. Works great and I highly recommend getting this especially at this price point!

Install this pretty quick or the resin turns brown from air. Heard someone say a drain flow restrictor bypass can be used to flush the membrane and extend life... idk the instructions are a few similar diagrams but don't really give operating instructions besides pressure.-Luckily just a couple lines. Be really careful with the lines. When I go to open or close valves (to save filters) they want to pop off because the connections are held by a plastic sleeve and coupling. Home depot has push to connect fittings which are better but expensive. This system does take my water 250-400ppm to 0ppm. I spliced in a TDS meter before and after the system that is not part of the system. I might move the first meter probe after the carbon stages to know when they need changing.Update: buying from koolermax/filter direct has a high shipping charge and it is hard to find anywhere else. Thought I could get a standard size but nope... this is the printer pricing scheme all over with the system being a loss leader I think. Im considering getting a different RODI for standard sizes.

Received about a month ago. Spent a little time making sure all the fittings were tight and had to stop and re-tighten in a few places before I could say it was "leak free". Once I got it to this point, it has not leaked.I bought a top-off float, and I have been able to verify that if the float is up the unit stops making water. I don't have it hooked up to a permanent water supply; I turn the water off when I am not using it or if I am not home so I am not 100% sure the float will do its job to stop the water -- I can only expect that it will -- but the ASOV does work if I manually lift the float. I did spring a leak where one hose blew, but I'm sure I didn't have it seated correctly. You MUST be sure to push the tubing in twice and make sure it is seated correctly. Giving a little tug should let you know you've got it right. Once I put the tubing back in, I have not seen another leak in almost a month.Water coming out is at zero TDS. Can't beat that. My only complaint with this unit is, if you download the PDFs from the manufacturer, both the "general" hookup pamphlet and the AR-122 pamphlet are set up to be one page, so it is very difficult to print, and it is even difficult to read on a laptop. Otherwise, it's a great unit and an excellent value for the money. I would recommend this to anyone who is looking at 6-stage RO/DI units and not willing to pay $300+ (like me).

Great quality and supplies are always available. I would not have needed to purchase this one, except the 7 year old one from them that I owned froze and broke all the plastic housings. keep an eye on the DI resin to know when to change that and watch the prefilter as that will give you an idea on the recommended change dates as everyone water is different and filters may not last the full recommended change by date.

I like the product however my water has high tds and I burned through the filters and membrane in about 300 gallons. So I went to purchase more and they want $15 for shipping on their website so I ordered some from Amazon and the top holes on the unit are very big making it impossible to use other filters that aren't theirs. kinda a bs move in my opinion. Also It isn't very detailed about what micron or anything else on the website. if I had it to do over again I would buy something else