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Captive Purity 35 GPD Compact RO

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Captive Purity

Captive Purity represents the highest quality in reverse osmosis technology. Captive Purity Reverse Osmosis Systems meet stringent standards and far exceeds the quality of systems from other manufacturers. A wide variety of options ranging from economy 2-stage units to top of the line 4-stage RO/DI units are available to suit your exact needs. Drinking water systems and custom installation solutions are available. Captive Purity Reverse Osmosis Systems are engineered and manufactured under strict guidelines to produce extremely pure water with exceptional focus on minimizing phosphates and silicates. This is a very important feature for reef aquariums.

  • Remove over 98% of all ionic impurities.
  • Remove over 95-96% of organic impurities.
  • Remove colloidal and particulate impurities.
  • Remove micro-organisms and pyrogens.
  • Remove chlorine, chloramines, pesticides, etc.
  • All systems include a non-corrosive 3/4" plastic garden hose adapter (non-brass).
2-stage Compact RO System Features:
  • Ultra-compact and economical reverse osmosis system.
  • 1500 gallon chlorine removal capacity sediment/carbon combo inline prefilter.
  • High flow and rejection TFC membrane
  • Includes non-corrosive 3/4" plastic garden hose adapter (non-brass).
  • Clear Canisters.
**Receive 15% off your replacement sediment filters, carbon filters and membranes when you purchase RO/RODI unit from us.


Manufacturer Info

Captive Purity manufactures water filtration and water testing supplies for marine and reef aquaria. The brand is best known for their high-quality line of reverse osmosis filter systems and accessories. Captive Purity also produces refractometers for testing salinity, portable pen-sized meters for testing pH as well as replacement filter media for their RO and RO/DI filter systems.

14 Reviews

JAMES OREILLY from FAYETTEVILLE, NC UNITED STATES

01/26/2014

Experience Level: Beginner

Compact RO

I first received the Compact RO with a broken connector elbow but customer service was great in assisting me with the problem. Other than that the system works great after I fixed a minor leak with teflon tape. I would recommend this RO system to anyone who has a smaller tank or does not need to filter large volumes of water.

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BENNETT OBERLANDER from ANDREWS, SC UNITED STATES

11/25/2013

Experience Level: Beginner

Pretty simple.

I have to agree with everyone who does NOT have a problem putting this together. I've never had an RO filter, and I didn't even read the instructions, which I guess I should have. But I can make it simple for anyone who might be confused when they get this... 1. Hook the white line up to the sink, garden hose, whatever(I used the hose adapter from my python). 2. Black and blue lines in the drain, run water for 15 minutes. (flushes carbon dust BEFORE installing membrane) 3. Turn off the water, disconnect the short white hose between the two filters, unscrew the cap, take the membrane filter out of the wrapper and install it. The end with the small o-rings goes in first. 4. Reconnect the white line and run water for half an hour. (gets the oily crap off the membrane) 5. Start collecting water from blue line. (clean) I bought this system because my tap water pH is about 9.0 due to carbonate hardness. At first I thought it wasn't working (still tested water over 8.8) because I didn't follow the instructions and didn't flush the carbon filter or wait the half hour for the membrane to get the preservative out of it. After I read the instructions and restarted, I had a pH of 7.0 and TDS below 10. Which is close enough to perfect for me. Now I just need to figure out some plumbing for a float valve so I don't have to watch this thing take 4 hours to fill up a 5 gallon bucket, but if you're going to complain about this being slow, what do you expect, it's 35 gpd? I should note that both filters in this kit say to flush for twice as long as what the captive purity instructions state. I went with the short route, everything seems to be working fine.

3 out of 3 found this review helpful

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MATTHEW ROSS from MINOT, ME UNITED STATES

09/24/2013

Experience Level: Intermediate

Good so far

So far it seems good, I've only been using it for a day, but it works as expected. Despite what other reviews stated when I was researching, it is quite easy to put together. We'll see how the water quality is when it comes time to test.

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MICHAEL YUSKO from Greenwich, CT

08/12/2013

Experience Level: Intermediate

Perfect!

I currently have a 30g biocube which I'm upsizing to a 60 gallon tank by the end of the year. I bought this RO unit with hopes of being able to stay on top of weekly water changes to keep the water where it should be and so far after my first change I'm really happy. I bought the unit because I don't need any more production than this makes. The unit seems a little underrated, as I left it for 6 hours and it produced 15-16 gallons.. So, definitely not 1.46gph. I waited to review the piece until the water was in my tank for over a week and so far so good. Algae grows real fast so I was waiting to see what came of it.. I use Reef Salt to bring the salinity to where I need it.

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DEJUAN from HOUSTON, TX

08/31/2012

Experience Level: Intermediate

great product and cheap

I bought this product for my fish tank. I was looking for a way to lower my carbonate/alk which was about 286 on average in the tank. I had a TDS level of 160-200 out of the faucet. by adding salt/ph buffer and other additives my carbonate became too high. This product has been giving me a near zero (0) level of TDS that now gives me a carbonate/alk of 160-200 where I need it to be depending on my salinity and additives. this product is at a great price and does the job.

2 out of 7 found this review helpful

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STEVEN STOPEK from PALM BEACH GARDENS, FL UNITED

07/04/2012

Experience Level: Beginner

reverse osmosis

It works although it is slow. I haven't had the chance to have the filtered water tested to see how effective the unit is. The biggest problem is that it came without directions on how to put the filter in. I hope I did it correctly. Otherwise, I am satisfied with its performance.

3 out of 4 found this review helpful

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ROBERT SAMPSON from MARYDEL, DE UNITED STATES

03/24/2012

Experience Level: Intermediate

First time buyer

I recieved the unit in find shape and on time. It's performance is as advertised. The only minor complaint would be that it came with no instructions as to hook it up. As a first time user of an R.O. unit I needed to ask a friend that is familiar with them for help. Very simple if you know about them but confusing the first time. Overall, I am very pleased.

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Mike C. from ROSWELL, GA UNITED STATES

02/10/2012

Experience Level: Intermediate

Great R.O. unit

Producing what seems to be more RO water than advertised. Compact and easy to use.

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RAMON CRUZ from SAN FRANCISCO, CA UNITED STATE

04/11/2011

Experience Level: Beginner

Does a good job

I like it because it saves me a lot of time from driving and buying water. It does what it says and I think it produces more than 35 GPD. Love it.

1 out of 1 found this review helpful

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IVAN from TOA ALTA, PUERTO RICO

07/09/2009

Experience Level: Beginner

Little Giant

Excellent product,easy to use and very effective. Water tastes good and it helped make my tank look cristal clear. Your fish/corals will appreciate it.

2 out of 2 found this review helpful

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