jeffryjb
NMS Member
Joined: 08/27/08
Posts: 39
Location: Omaha
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So, it's been 6 months and time to change my RO filters. I have to admit I got the Whirlpool model from Lowes. Basically didn't do enough research before I bought, water is water right? Lesson learned. Anyway, it looks like it's going to run $90 to replace the filters. I was just looking at Buckeye and they have a 100 gpd RO/DI set up for $123. If I do my math correctly, it is kinda late, changing out all the filters on this would run about $60 and I would be adding the DI that I don't have now. Is there something I'm missing or is that a much better deal?
Thanks
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NCC-1701
Joined: 11/06/06
Posts: 660
Location: Hastings NE
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Check out these ppl: http://www.thefilterguys.biz/ I bought the $160 version from them with the auto shut off while adding a float valve which works great with 5gal drinking water jugs. Bohlke turned me on to them and they are really nice people if you need to email them for help. They claim to be the cheapest of any as well.
I emailed them back and forth a few times when asking what I needed as it was my first water purification system. They were super kind and helpful where I wished every biz was like theirs to be so helpful and kind when making a sale. I don't think there is any better place to go when it comes to water purification.
NCC
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greenmonkey51
Joined: 07/13/07
Posts: 206
Location: Lincoln
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| Posted: 11/17/08 02:59AM |
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How many pre-filters do you have. Even on the biggest RO/DI systems I can't see it being that much to replace the filters. It was 20$ to replace my 2 filters. Did you have the membrane figured in that. Your membrane should last at least a year if not 2.
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NCC-1701
Joined: 11/06/06
Posts: 660
Location: Hastings NE
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I haven't replace my filters since I got the system. I have 3 filters before the ro and a di after that. That's just me though, duno what greenmonkey needs.
NCC
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greenmonkey51
Joined: 07/13/07
Posts: 206
Location: Lincoln
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| Posted: 11/17/08 05:01AM |
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Sorry, I was asking Jeffry.
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wolfie2012
NMS Member
Joined: 08/01/08
Posts: 162
Location: Omaha, NE
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| Posted: 11/17/08 11:08AM |
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Remember that most of the higher gpd RO filters have a lower rejection rate. 75gpd is usually the highest you can go without losing much. For Buckeye specifically I want to say that their 75gpd is 99% whereas the 100gpd is something like 96%.
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Hank
NMS Member
Joined: 02/07/08
Posts: 581
Location: O!
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It depends on the flow through a given membrane that you have chosen. The 150gpd membrane is rated at 98.5% at 77 degrees and 65psi while it will handle up to 90psi. The production would begin to exceed 150gpd for this membrane if temp and or pressure was higher than 77 and 65 respectively, that is also when you will get the lower rejection rate mentioned by wolfie. If you are going to exceed pressure or have high temp feed water, you could easily put 100gpd through a 75gpd membrane.
Check out Buckeye:
http://www.buckeyefieldsupply.com
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bohlke
NMS Member
Joined: 10/30/06
Posts: 1806
Location: Lincoln
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I think I read that you typically replace the pre-filters every year and the RO membrane every 5.
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jeffryjb
NMS Member
Joined: 08/27/08
Posts: 39
Location: Omaha
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Those replacement schedules sound a lot better to me. For $60 to $90 every 6 months I was thinking about going back to buying water at the LFS. I was also curious about the gpd thing because I don't know who would even need 50 to 100 gpd so that was interesting reading. Maybe I'll do the filters every 6 mos and the membrane every 18-24 mos.
Thanks
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Hank
NMS Member
Joined: 02/07/08
Posts: 581
Location: O!
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I would suggest investing in a TDS meter, they aren't that expensive. You might be suprised what kind of output you want to have per day when setting up a 250 gallon system- waiting stinks.
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