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Question about RO membrane
I bought a BWI SR-Elite 100gpd back in 2011 and noticed the TDS is starting to creep up. I guess the membraine is on its way out as I just changed all the filters and its sill higher than I'd like. My question is, as it is a 1:1 unit do I need to order a special membrane or is the unit itself what engineers the 1:1 ratio of good to bad? I found the original thread advertising it but BWI never really did say what the membranes were.
http://www.canreef.com/vbulletin/sho...light=1%3A1+ro |
Any 100GPD membrane should work, I think the limiter in the waste water line is what improves the ratio to 1:1.
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Standard 100GPD membrane, I have the same unit and recall checking what kind of membrane was in it. I'm still on the original membrane but same as you TDS creeping up.
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Try flushing out the membrane by removing the Cartrage unit and hooking it up backwards. I couldn't believe the crap that came out of mine and it started working like new again.
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thanks for all the quick replies guys! Much appreciated :biggrin: |
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http://www.reefsupplies.ca/online-st...ectrapure.html |
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source is usually between 13 and 20. I haven't had the auto-flush plugged in in awhile so it would have helped to have that plugged in (cord wasn't long enough) but its had a pretty good run of 3 years. I need to change the DI (on order) before I can confirm that I need a new membrane but it seems likely that its the membrane just based on time alone.
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Curious, what is the output? Anything to really worry about?
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Mine is probably not 0 anymore, but close enough. |
Yeah it was zero again last night. I don't even know if I have the TDS meter hooked up right. I cant' remember where I got it but it had incredibly terrible instructions, they didn't translate well or something. I'll use my handheld one today when I get home. I'm wondering if the 9 reading was when I first turned on the system or something? Who knows. I have zero luck with technology it seems :razz:
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Can you take any to work to test?
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all our TDS meters at work are inline I think. I might have to pursue that one
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