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Old 01-12-2013, 09:14 PM   #1
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Replacement RO/DI filters

Hey guys i have the 100 gpd ebay RO/DI for $65. I want to replace the filters on it but want to know which ones i need. I know a lot of people have this system...so someone please point me in the right direction
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Old 01-13-2013, 11:00 AM   #2
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Mornin'! If you can post a link to the system, I can recommend which filters to get. I looked on eBay as I haven't seen the system referenced for awhile, and I can't find it.
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Old 01-13-2013, 11:07 AM   #3
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Quote:
Originally Posted by fort384
Mornin'! If you can post a link to the system, I can recommend which filters to get. I looked on eBay as I haven't seen the system referenced for awhile, and I can't find it.
Thanks for the response Fort...i've got this guy

http://item.mobileweb.ebay.com/viewi...d=380341933047
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Old 01-13-2013, 11:18 AM   #4
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This appears to be the 1 for 1 replacement for your filters (minus the membrane, which shouldn't need replaced yet).

3pcs Portable Reverse Osmosis Ro Replacement Filter | eBay
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Old 01-13-2013, 11:21 AM   #5
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Quote:
Originally Posted by fort384
This appears to be the 1 for 1 replacement for your filters (minus the membrane, which shouldn't need replaced yet).

3pcs Portable Reverse Osmosis Ro Replacement Filter | eBay
Sounds great. Thanks. I think i'll also buy a tds meter, if you have any recommendations please share!
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Old 01-13-2013, 11:21 AM   #6
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Hold on you will need replacement resin too for the DI stage though. Let me see if I can find that.
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Old 01-13-2013, 11:24 AM   #7
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0ppm Non Transparent ion Ro Di Replacement Filter QDI | eBay

Here it is.

So, with these 2 links, you will have replacement sediment and carbon blocks, and replacement resin - plus an extra replacement for the carbon block filter.

For TDS meter, BRS sells an in line one that has murlok fittings. Looks like it would work on your system? Definitely need one as this is how you can tell when it is time to replace the filters. I recommend testing both TDS on out of the membrane and out of the DI resin.
Dual Inline TDS Meter DM-1 - HM Digital - Bulk Reef Supply
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Old 01-13-2013, 01:50 PM   #8
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Quote:
Originally Posted by fort384
0ppm Non Transparent ion Ro Di Replacement Filter QDI | eBay

Here it is.

So, with these 2 links, you will have replacement sediment and carbon blocks, and replacement resin - plus an extra replacement for the carbon block filter.

For TDS meter, BRS sells an in line one that has murlok fittings. Looks like it would work on your system? Definitely need one as this is how you can tell when it is time to replace the filters. I recommend testing both TDS on out of the membrane and out of the DI resin.
Dual Inline TDS Meter DM-1 - HM Digital - Bulk Reef Supply
Cool thanks for all the help Fort. While im ordering at BRS, i'll probably also get some carbon/chemipure to help out with the algae in the tank. What do you recommend/run? I need somthing in bags as i dont have a reactor.
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Old 01-13-2013, 02:03 PM   #9
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I use rox .8 but I run a reactor. For bags the bituminous is probably a better (and cheaper!) option.

You should look at their carbon reactors though. They are great and not too expensive. You could run it with gfo to reduce po4 to help with algae.
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Old 01-13-2013, 02:05 PM   #10
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Quote:
Originally Posted by fort384
I use rox .8 but I run a reactor. For bags the bituminous is probably a better (and cheaper!) option.

You should look at their carbon reactors though. They are great and not too expensive.
Cool, ill look into the bituminous

I definitly will buy some reactors in the future. But space is limited and i need a sump first
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Old 01-13-2013, 02:17 PM   #11
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BRS Bulk Large Particle Lignite Aquarium Carbon - Bulk Reef Supply

Also, a good comparison video between the different grades:

Aquarium Carbon Demo - Bulk Reef Supply

While bituminous doesn't perform as well as some of the higher grades, I think running Rox 0.8 would be tough in a bag because the particle size is so small, and I think the lignite would turn to dust in that environment (based on my experience with lignite through my work).
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Old 01-13-2013, 03:08 PM   #12
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Quote:
Originally Posted by fort384
BRS Bulk Large Particle Lignite Aquarium Carbon - Bulk Reef Supply

Also, a good comparison video between the different grades:

Aquarium Carbon Demo - Bulk Reef Supply

While bituminous doesn't perform as well as some of the higher grades, I think running Rox 0.8 would be tough in a bag because the particle size is so small, and I think the lignite would turn to dust in that environment (based on my experience with lignite through my work).
Okay great. Yeah it doesnt hve to be really high quality, my algae problem isnt that bad. But the carbon will help with that anyways right?
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Old 01-13-2013, 03:32 PM   #13
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I am not so sure running carbon will help that. It is more about polishing the water than reducing organic nutrients. Do you know your PO4 level?
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Old 01-13-2013, 03:49 PM   #14
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Quote:
Originally Posted by fort384
I am not so sure running carbon will help that. It is more about polishing the water than reducing organic nutrients. Do you know your PO4 level?
Hmm darn. What can i run that will help then? No not sure of my Po4. I'll have to get one of those at BRS too
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Old 01-13-2013, 03:51 PM   #15
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Well you can run gfo in a bag to reduce phosphate. That and nitrate are the biggest nutrient contributors to nuisance algae.
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Old 01-13-2013, 03:52 PM   #16
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Quote:
Originally Posted by fort384
Well you can run gfo in a bag to reduce phosphate. That and nitrate are the biggest nutrient contributors to nuisance algae.
Okay well thats good! My trates are and always have been low so its definitly the phosphates then. Okay, i'll look for some GFO and carbon. This sounds good!
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Old 01-13-2013, 03:54 PM   #17
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I would test PO4 first just so you know. Low trates does not necessarily mean you don't have nitrate issues either - the algae could just be using it all up so it tests low.
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Old 01-13-2013, 04:14 PM   #18
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Quote:
Originally Posted by fort384
I would test PO4 first just so you know. Low trates does not necessarily mean you don't have nitrate issues either - the algae could just be using it all up so it tests low.
Okay cool i'll find out. And how does a reactor work exactly? Can i setup a phosphate and carbon dual reactor without a sump? They seem cheap and easy to grt going i just have never known what they do
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Old 01-13-2013, 04:16 PM   #19
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You just need A pump to circulate the water. It could conceivably go into the DT.
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Old 01-13-2013, 04:18 PM   #20
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BRS has a video that shows exactly how to hook up and install.
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