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Old 09-12-2003, 01:56 AM   #1
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Ro/Di Filter questions

I went ahead and ordered myself an RO/Di unit And I was wondering if This loks like a good one.. BTW there is many for sale from this same person.. Seems like an Awesome Deal


RO585+DI 6-stage 85 gal/day Reverse Osmosis Water
System+DI filter

http://cgi.ebay.com/ws/eBayISAPI.dll...category=20755


Thx Again,
James
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Old 09-12-2003, 08:47 PM   #2
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**BUMP**
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Old 09-12-2003, 08:49 PM   #3
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Sounds like a fabulous deal if you get whats pictured..
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Old 09-12-2003, 08:51 PM   #4
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Everything that is pictured is what you get.. I got it for $135.00 shipped.. I should have it sometime next week and will post as to how it works..

James
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Old 10-19-2003, 07:23 PM   #5
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After you use it for a few months. I'd like to hear what you think. My concerns would be that there is no pressure gauge, so you don't know how your membrane is doing. There is no TDS meter, so you do no know if your DI is going and you can't see any of your filter cartridges so you have to take it apart to see if your sediment is dirty or your DI is exhausted.

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Old 10-19-2003, 11:26 PM   #6
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Quote:
My concerns would be that there is no pressure gauge, so you don't know how your membrane is doing. There is no TDS meter, so you do no know if your DI is going and you can't see any of your filter cartridges so you have to take it apart to see if your sediment is dirty or your DI is exhausted.
I am certainly no expert on RO units, but I thought that *most* RO membranes are good for around 2-5 years or so. So lets say we shoot for replacing it in 3 years.

Also I think that regular maintenance of the sediment filter calls for replacing it every 6 months and the GAC filters should be replaced once every year.

You are correct, though, that without a TDS meter, one cannot measure dissolved solids in the water. So we would be guessing about when to replace the DI resin. But I think a safe guess would be around the 2 year area. Perhaps the same time the membrane is replaced...
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Old 10-19-2003, 11:43 PM   #7
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Your assumptions are absolutely correct. However, I am a gadget guy and I like to monitor things - thus I like an in-line TDS meter, a pressure gauge and clear housings. If you ever exceed your GAC capacity and chlorine gets to your membrane, it will destroy it in short order. A pressure gauge will tell you if you have a problem or if your membrane is getting old. I like to keep an eye on my membrane performance - it is like a gas gauge in my car. Changing the GAC and pre-filter every 6 months is a good idea, but I can never keep track of that kind of stuff, but one look at the filter through a clear housing and I know the condition of my pre-filter (and DI). I always change my carbon at the same time as my pre-filter. That is must my preference and style and MHO. Since you got such a great deal on your RO/DI, you may want to consider getting a clear housing for for your DI when you replace it.

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Old 10-19-2003, 11:44 PM   #8
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Why bother taking chances when you can pick up a TDS Meter from Ebay for US$25.00? I bought one from this guy in canada (filter, tank and meter) and got a great deal on it and love it. The TDS meter is cheap and easy to use and worth the peace of mind. With all the money you spend on an aquarium, is it really worth skimping out over a lousy 25 bucks? Also, turn of the flow restrictor on your waste water line about once a month or so and let it run free to rinse out any sediment, this will prolong the membrane life a bit.
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Old 10-20-2003, 12:04 AM   #9
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You guys are 100% right on all info. I just hate measuring every little thing. I guess I am the opposite of normd as far as gadgets go...



Now you all have me thinking I need to pick up my own TDS.

Quote:
Since you got such a great deal on your RO/DI, you may want to consider getting a clear housing for for your DI when you replace it.
Great advice!!! In fact, you could buy a clear housing for the sediment filter as well. I may do that!!!
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Old 10-20-2003, 01:03 AM   #10
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I just bought that same model from the same dealer the other day...I am waiting for it to come in! Although, I was lucky enough to get it for about 116.00 with shipping I hope it works well, I have heard good things about these, soooo....we'll see! where can you get the housings and other parts like the TDS? Besides online?
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