RODI Membranes etc.

[joeyprice]

I have a 75gpd BRS 6 stage that is due for new media etc. Has anybody found better and/or cheaper replaements than the ones offered by BRS? Also, is turning this into a 150 gpd filter as simple as a higher flow membrane?

 

[civics14]

I believe its the membrane and the flow restrictor valve. Last membrane I bought was from Amazon and is serving me well.

 

[timeconsumer]

It depends what is most important to you, speed or efficiency. The DOW Filmtec 75 GPD is crazy efficient and can have a rejection rate of 98-99%. Also at higher pressures like 50-60psi it's closer to 90GPD. Spectrapure offers hand tested versions of this membrane that are at 99% rejection rate.

 

[york1]

I have always used the dow membranes Has not failed me yet. I used the BRS 200gpd upgrade kit but they also have a 150 kit too. It comes with everything you need and is fairly easy to put together.

Water Saver Upgrade Kit

Why does BRS recommend this? Water Saving Upgrade Kits are probably our most recommended RODI upgrade. If you have proper pressure (65+ PSI) we highly recommend installing the kit, because it will produce water twice as fast as a standard 75 GPD or 100 GPD membrane while cutting the amount of...

www.bulkreefsupply.com

 

[iu_gary]

I made the change from a 100gpd to a 150 water saver and really like the result.

As for the membranes they are $27 on Amazon compared to BRS. They are identical. I ordered the restrictors from BRS. Let me know if you want the parts list. I think I bought a couple extras so I may have it already.

Filmtec 75 GPD Filmtec Residential RO Membrane