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Premium RODI System

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Product Description

These four stage units include the most important components of RO/DI systems, and also include the most popular set of accessories for optimum performance and operation. Units come assembled, and include: clear housings, 1-micron poly sediment filter; 0.5-micron, 20,000 gallon carbon block; RO membrane, rust-proof bracket, pressure gauge, housing wrench, drain saddle, and 6 feet of blue, yellow, and white tubing for the supply water, drain, and purified water. These units also include a filled, refillable DI resin cartridge. Semiconductor grade resin assures you the best water quality possible and the refillable cartridge provides an economical option for replacing the resin.

We offer an expansive range of options and add-ons, some of which are described below and can be selected above.  Not sure what options would be best in your situation? Need an extra stage?  All our water treatment systems are built in our shop and can be customized. Please give us a call - we have a specialist waiting to talk with you!

The product manual is available for immediate download!

RODI Capacity  Depending in large part upon which RO membrane is used, RODI systems are configured to produce a specific number of gallons per day.  There are several things to consider when selecting the capacity best for your situation.  If we consider a 75 gallon per day system for example, a bit of arithmetic shows the system will produce 3 gallons per hour.  So although you may never need to produce 75 gallons of RODI water in a day, most users will find a "gallons per hour capacity" more practical.
24 GPD = 1 GPH; 36 GPD = 1.5 GPH; 50 GPD = 2.1 GPH; 75 GPD = 3.1 GPH; 100 GPD = 4.2 GPH; 150 GPD = 6.3 GPH
These capacities will be met (+ 20%), if the feedwater meets factory specifications (see the table below).  Also consider how well the various RO membranes clean the feedwater (a higher "rejection rate" results in cleaner RO water):  


ASOV Kit  Auto Shut Off Valves stop the flow of concentrate (a.k.a "waste water") when the flow of purified water is stopped by a separate valve (for example, a float valve).  This Kit includes a check valve and ASOV (both plumbed in for you), and a float valve with built in bulkhead set to accept 1/4" tubing.

Flush Valve  Routine use of a flush valve can help extend the useful life of the RO membrane.  Options include a manual valve the user should open occasionally; or an automatic valve powered by a transformer (included) that opens once per hour for 18 seconds - giving you one less thing to remember to do!

DI Bypass  Many users wish to access their RO water before it reaches the DI stage.  With the simple opening of our unique 3-way valve, RO water exits the system without passing through the DI resin.  Say goodbye to shortened DI resin life due to TDS creep!  Provides a convenient source of RO drinking water, and facilitates sampling the TDS of RO water with a handheld TDS meter.  Includes 6 feet of 1/4" tubing.

TDS Meter  These meters are an important tool in assessing the purity of your treated water.  Both inline and handheld meters are available.  See our Meters and Controllers for detailed descriptions of each.  If you select an inline meter for your new RODI system, we recommend the TRM1 - the only 3-probe TDS meter on the market.  Allows the monitoring of TDS of 1) feedwater (tap water), 2) RO water, and 3) DI water.

Feedwater Supply Fitting  Feedwater Fittings are used to tap into your plumbing to supply water to the system.  Depending upon where in your home or facility you install the system, we have a fitting that will work for you!

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Product Reviews

Showing reviews 1-10 of 32 | Next

  1. Exactly what I needed 5 Star Review

    Posted by on 14th Mar 2018

    This system is everything you need and nothing you don't. Had to add a booster pump, but the system works great!

  2. Excellent product 5 Star Review

    Posted by on 9th Jan 2018

    I was on the fence about which system to buy, and I also had a couple of other questions/concerns. I called on a Saturday and was able to speak to someone. He answered all of my questions and concerns with no hesitation. I placed my order online and received updates as it was processed and shipped. It arrived in 2 days and was packed well. Once I mounted it, set up was easy and I was making RO/DI water in about 1-1/2 hrs.

  3. Great system! 5 Star Review

    Posted by on 2nd Jun 2017

    The system is perfect. Very well built and included everything I need. I could have easily spent similar money on a similar system from a large online retailer or somewhere else, but the support that I have seen Buckeye hydro provide in multiple online forums as well as other anecdotal stories of their advice really gives them a leg up. Also they're a local Ohio company and my lfs carries their products.

  4. Clean setup. 5 Star Review

    Posted by on 28th Mar 2017

    The filter unit arrived well packed, they used Styrofoam peanuts I could have done without but, it was secure in the box. The unit was pre-assembled minus the addition of the DI filter media and the membrane. It also came with a set of detailed instructions and applicable lines and fittings. Overall good deal. Will definitely be doing further business here.

  5. works well 5 Star Review

    Posted by on 30th Jan 2017

    Very good

  6. simple install, well made and built to last 5 Star Review

    Posted by on 13th Apr 2016

    The instructions were clear, the quality was first rate of all the products purchased. I can tell this system is built to last and will serve my reef rank well for years providing RODI water.

  7. great system 5 Star Review

    Posted by on 7th Mar 2016

    My 1st ro/di system and works awesomely

  8. life saver 5 Star Review

    Posted by on 22nd Feb 2016

    Wonderful product. Easy to install. Easy to use. Not sure how I lived without it

  9. Very Good Experience! 5 Star Review

    Posted by on 22nd Jan 2016

    I have never worked with water or plumbing before. The system was super easy to install and i had no problems getting it going. After using it for 4 days still no problems. Couldn't be happier! Buckeye you do great work!

    200 ppm city in, 2 ppm ro out, 0 ppm di out

  10. best rodi 5 Star Review

    Posted by on 2nd Jun 2015

    Work great, 44 city water, 1 ro, and 0 at di. Couldn't be more pleased

Showing reviews 1-10 of 32 | Next

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