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- 75 GPD Reverse Osmosis Membrane - Dow Filmtec
Works Like A CHAMP By JCulmo on 8/8/2014JCulmo would recommend this product to a friendFirst of all anyone concerned about the compatibility of this membrane with a Coral Life II 24GPD system, don’t be. This 75 GPD membrane fits perfectly with no problems to speak of. Make sure if you are upgrading the output (in my case 24 GPD to 75 GPD) membrane, be sure to get the matching flow restrictor and put the restrictor on the waste side of the membrane (in my case it is the red waste water side). It took be all of about 10 minutes to install and upgrade, of which 5 minutes was spent trying to get the old membrane out LOLOLOL. If you are considering this upgrade, just do it. The price is the best out there and of course, it comes with the best service and prices that we all love BRS for.
EASY and RELIABLE By rppvt on 6/3/2014rppvt would recommend this product to a friendBRS doesn't cut corners. this is the best company for RO membranes out there. And it's easy to install (comes with instructions!)
Brs recommended for a reason By Eric on 5/8/2014Eric would recommend this product to a friendGood quality membrane. Super easy to throw in. Brings my tds from over 200 to around 7. I'm pretty happy with it.
Works as advertised. Much cheaper than big box supply stores By kiapolo on 2/28/2014kiapolo would recommend this product to a friendI produce about 5 gal of RO water a week. My first filter lasted a few years. Just replaced recently and works like a charm. A little difficult removing from the RO cannister, but that's just the way it works.
What an addition By Manfred on 2/18/2014Manfred would recommend this product to a friendUpgraded my older 35 gallon per day membrane with this one and my water production nearly tripled.
Excellent product By Redneck reefer on 1/23/2014Redneck reefer would recommend this product to a friendBought this to upgrade existing unit and have to say I've never used a better membrane especially for the price 0tds Ty brs
Good Membrane By Preston on 1/6/2014Preston would recommend this product to a friendFirst membrane that came with my value RO unit gave me 0ppm water with the inline TDS meter from BRS. Which was about 1.5 micro siemens on my higher quality TDS meter.
This one brings the ppm to about 1-3ppm at any given time. This hasn't been a problem in any of my tanks. Very satisfied overall with the product.
excellent By joepat on 12/23/2013joepat would recommend this product to a friendReplaced mine last week along with all the filters and everything once again works like new. My original membrane lasted over two years and I have a 180 and a 90 gallon tank and make a lot of water.
Specs Says it all. great membrane. all i buy By BuckeyeFrags26 on 12/11/2013BuckeyeFrags26 would recommend this product to a friendThis specific membrane in general is the only type and manufacture that I use in my RODI system. I just now had to replace mine after 1 year of use. And I have to 32 gallon water wells , one for mixing my saltwater one for my r.o. H²O. And I currently have a 125gal reef Display and a 55gal frag tank so I use my r.o. system on a weekly basis. So I can't say enough good things about this product and manufacture.
Long lasting By Nish on 10/21/2013Nish would recommend this product to a friendVery good product, long lasting. Performing as expected.
Good Product By Eric on 7/5/2013Eric would recommend this product to a friendKnocks tds down to 8 ppm. Works well. Will buy another at some point.
Only the best! By Andy on 5/14/2013Andy would recommend this product to a friendI have always used this membrane from day one. Best on the market.
Previously Asked Questions
by Miles on April 1, 2014, @4:47 PM
Can this work with Corallife products, such as the pure flo-II?
Bulk Reef Supply Hi Miles,
Membranes are a standard size so they will fit in any unit. Just make sure that if you change the speed of the membrane you also change the size of your flow restrictor to match.
by Dong on May 2, 2014, @11:35 AM
How long (as in how soon)do we need to change the filter inside on the membrane?
Bulk Reef Supply Hi Dong,
The membranes last quite a long time, typically 3-5 years though if you treat them well (vigilant on changing your pre-filters on time, etc) they can last even longer.
by Linh on October 25, 2013, @3:56 PM
I have purchased a 75g 5stage plus rodi 6mths ago and wanted to know how long should the membrane and di resin last. From the first time I used it my tds coming in to the di chamber starts around 120 for afew minutes then gets down to 10. Comes out to 0 going out of the di chamber. Does this sound about right or do I need to change the membrane. I've change the sediment filter also. Thanks.
Bulk Reef Supply Hi Linh,
That sounds pretty typical. It is higher at first because of tds creep and will lower as it runs. Non-exhausted DI resin should give you 0 TDS coming out. The membrane itself will typically last 3-5 years, sometimes even much longer. DI resin doesn't really have a "normal" as it is completely dependent on your source water. Monitor the TDS and when it begins to go above 0 then it is time to change the resin. We use a color changing DI resin so this should also coincide with the resin turning from a dark blue/black color to a gold/yellow color.
by BJ on September 4, 2013, @5:12 PM
What were to happen if you put a membrane at a different rate than the unit is mark at? For example, putting this 75gpd into a 50gpd RODI unit or putting a 90gpd membrane into a 75gpd unit? They all seem like the same plastic enclosures. Does the membrane just really dictate the GPD output?
Bulk Reef Supply Hey BJ,
If you change the size of the membrane without changing the flow restrictor to the proper size your unit will have the incorrect amount of waste water. It will either have too little water which would damage the membrane or too much water, which is just a waste of water (and could decrease pressure). The housings for the membranes themselves are universal. The membrane is what changes the output, though there are some other factors such as water pressure and temperature that do as well.
by Tom Syswerda on May 6, 2014, @7:53 AM
I have this 75gmd membrane in in my unit and keep it at 50 psi coming in. My city water psi is 80. I was told that if I were to open the valve up (incoming water to the 80 psi instead of the 50psi I am regulating now that I would get more efficientcy? Should I keep that water at 50 psi or 80psi? Going into the rodi unit.Thanks
Bulk Reef Supply Hi Tom,
The unit can handle up to 80psi without issue and it does perform better at higher water pressure. I would go ahead and run it at the 80psi, there isn't any reason not to and performance will only go up.
75 GPD MEMBRANE (98% REJECTION RATE) Hands down the best membrane for our hobby.
Compatible with all RO systems
FILMTEC reverse osmosis membrane elements for home drinking water are the industry's most reliable. Advanced membrane technology and automated fabrication allow these elements to deliver consistent performance that equipment suppliers, water treatment dealers, and residential customers can rely on. FILMTEC elements are shipped dry for convenient handling and long shelf-life. These elements are NSF/ANSI Standard 58 listed. Equipment suppliers can take advantage of FilmTec's Standard 58 listing and participation in the NSF Data Transfer Protocol to reduce costs for reduction claims for their systems.
- Rated at 50 psi
- Will purify about 20% more water than competitive elements rated at 60 psi
1. Permeate flow and salt rejection based on the following test conditions: 250 ppm softened tap water, 77°F (25°C), 50 psi (3.4 bar), and 15% recovery.
2. Permeate flow rates for individual elements may vary +/-20%.
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