Comments: Works great

Comments: Love these membranes great value and performance keeps hobby affordable and critters from suffering poor water quality thanks guys/gals for always researching to help hobbyist save$$$ I got a 20+ year old true Percula Clownfish "Hoss" that thanks y'all to Sincerely Christopher&Hoss Florida

Comments: I went for a higher output membrane expecting a modest improvement in replacement time after a water change. Today, 24 hours after a 20 gal change my reservoir is full again. Fantastic

Comments: Great value. Replaced my kent cartridge. Within 4hrs running 2ppm tds .

Comments: I bought one of the 75gpd membranes 2 years ago and ever since I have gone through my DI cartridges like crazy. I had changed the flow restricter at the same time.
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<br /> I finally bought some dual tds monitors to check the in/out on my ro and another one to monitor my dual di cartridges.
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<br />That monitors showed that the tds in/out on the ro membrane was exactly the same at 34ppm. So I installed my old spectrapure 50 gpd membrane that is over 10 years old which I had saved by putting it in a sealed bag with some ro water in the frig. Now the tds monitor show 34ppm in and 0 ppm out.
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<br />I only gave three stars because I am not sure what the problem was with this membrane. The only reason I was changing membranes was to up the gallons per day. My old membrane was still going strong whem I replaced it. Needless to say I am now sticking with all the highest quality replacement sediment, carbon and di filters frm spectrapure.
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<br />Well that showed 34ppm in and 0 ppm out.

Comments: So far I am impressed. I run a dual TDS meter and the water comming in is 325 PPM and the water going out is 3 PPM. Seems to be removing contaminents at nearly 100% Highly recomended!!

Comments: fit correctly into my Spectrapure system, and started to provide "0" TDS water immediately. I would buy this item again.

Comments: working perfectly

Comments: Perfect

Comments: this membrane was a lot cheaper than the original one that my ro unit came with. So far I am happy with it fit very easy like they said it would

Comments: After install of this, and fresh carbon and DI cartridges, my TDS of processed water is at 1. Yah, 1. Per million. It works quite well, and is replacing my Kent TFC membrane (which worked as well, but is double the cost).
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<br />Quick note - the Captive Purity housing is a tad too large for the Kent membrane, but this membrane should fit fine in the Kent. The seal around the outside of this membrane covers a larger circumference but should compress just fine in the *slightly* tighter Kent housing. The Captive Purity membrane and the CP housing work, of course, perfectly together.

Comments: I am just finish to install the membrane 150gph and it seems to work very good.

Comments: This is a great value and the output water values are fantastic. I move between 500 gallon of RO water every month and quality of the water makes everything work right. Thanks you guys for saving me money!!!

Comments: This is an excellent TFC. I used this to replace the GE brand that came in my Corallife PRO FLO II and this one works much better the Diatom algae has completely gone away.

Comments: Seems to work fine. Used it along with the replacement kit for prefilter, carbon filter and DI filter and my TDS is down to 0

Comments: This is an excellent reverse osmosis membrane and costs much less than many other "name brands."
<br />I monitor my water as it is being filtered and can say this membrane works quite well.
<br />Make sure you spend a few dollars to be able to flush your membrane so you can preserve your investment.

Comments: Timely shipping and good packaging (the filter only comes in a plastic bag but it was in a larger box with packing peanuts). The filter looked to spec as my original. Went to youtube to get an instructional on how to/how not to install it. I recommend that for 1st timers. My water quality is pretty good out of the tap and ppm was at zero after flushing. Just installed it so my rating does not judge longevity.

Comments: We recently replaced the RO membrane of our Coralife Pure-Flo II with this product and, thanks to our in-line dual TDS meter, we now can rest comfortable knowing that our water is coming out super pure. The RO membrane is taking the water down to ~12ppm, and our DI filter ("Color Indicating Mixed Bed DI Cartridge") brings that number down to 0ppm. We have no comment on longevity yet, but as it stands we are very happy with the price and performance of this product.

Comments: Thank you again Marine Depot Team.
<br />Water now pure and with the addition inline dual TDS meter A perfect combination.
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<br />Thanks Dom

Comments: I bought this 100 GPD membrane and the "RO1215 Flow Restrictor 75-100 GPD" to upgrade my current RO/DI system from 25 GPD to 100 GPD. I am on well water with an incoming TDS of approximately 600 ppm and the system works great because the output is 0 ppm.

Comments: I give it a great rating because it seems to do the job just fine (have checked the dissolved solids several times). So far, it does what a membrane is supposed to do and is very reasonably priced.

Comments: What more can I say- it does what it's supposed to do (gets my TDS meter reading zero), and is noticeably less expensive than other equivalent products available elsewhere on the web...

Comments: I am very pleased with this product. Replacing the membrane is just a good practice when replacing your other filters. I would recommend this product.

Comments: i julio will recomend this item to anyone.

Comments: Easily removed and reinstalled. Works great!

Comments: Used it once since purchased. A lot quicker than the 50GPD I upgraded from.

Comments: It works really good. I have no problem with it.

Comments: So far my PH has not moved a bit and my TDS will not go lower then 100ppm.i'm breading discus so now I have to spend more time and money to get my PH right and hope thay hatch with that TDS. I like it about 50 to 80 ppm LIKE I SAID YOU GET WHAT YOU PAY FOR!!!!!

Comments: Installed this unit to replace my original Coralife 50GPD membrane and to date my best recorded TDS was 3 ppm with this Captive Purity Hi-S unit. My cofiguration is: (prefilter)(Carbon)(Carbon)(Membrane)(DI KATI)(DI ANI). Now my DI stages no longer have to work as hard to pull out the remaining materials. Works for me...
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<br />55 Gallon SPS

Comments: great clarity, produces 50 gpd. Very satisfied.

Comments: This is my second replacement membrane for my RO/DI unit. 1st one was good for 3 years, and so far this one is working great as well, if I can get out 3 year out of this one it will be great.

Comments: Could not have been much easier purchase. I had a question about compatibility with my existing R/O unit and called customer service. Glad I did because I would not have purchased a different flow restrictor to go with the larger rating of this membrane.
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<br />Installation was quick and easy and the flow restrictor was right where they said it was. Took less than ten minutes to install.
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<br />I have not tested the water, but judging by my water changes, everything works great.

Comments: I purchased a Captive Purity Hi-Silicate Removal TFC Replacement Membrane and within a few gallons of use the total dissolved solids number went from 3500ppm to zero. Good product!

Comments: This is a great product so far. Easy to replace the old membrane. Just keep track of what color tube goes where, before removing them! The entire replacement took about an hour, for all filters, flushing, etc.

Comments: Excellent replacement membrane. It was easy to install and is working great; there is no semblance of a big difference in performance than a more expensive name brand unit.

Comments: My Phosphates were running high until I installed this membrane. Now they measure less than 0.03ppm. This is an excellent choice when replacing your RO membrane.

Comments: product works great. I upgraded from the 24gpd to the 60gpd and it is alot better.

Comments: No actual branding on product, and could not find a connection between membrane manufacturer and Captive Purity. Upon some research found out it is just a generic membrane made in some country like Korea. Unsure of true quality, seems cheaply made compared to my old membrane, but seems to work so far.

Comments: easy to install. Fast producer. I have it installed in my Agua FX RO/DI Unit. I purchased the 100 GPD limiter with this unit and produced water fine.