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Old 01-13-2009, 08:48 PM   #1
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RO/DI filters from ebay..

im looking for a less expensive RO/DI filter. i found a few on ebay. do they work like their supposed to(will my water end up at 0ppm and pH 7 or less)? and is 3X RO filtering necesary or any more beneficial?

heres two..
7 stage 100GPD RO+(3X)DI Reverse Osmosis Water Filter - eBay (item 110336068378 end time Jan-14-09 18:21:59 PST)

Zero 0 ppm Reef 4st Reverse Osmosis RO+DI Water Filters - eBay (item 120361836081 end time Jan-15-09 18:34:39 PST)
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Old 01-13-2009, 08:52 PM   #2
Thanx but no.....


 
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Mine, that I love

AQUA-SAFE AQUARIUM II REVERSE OSMOSIS WATER FILTER - eBay (item 390023836427 end time Jan-16-09 09:00:00 PST)
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Old 01-13-2009, 08:52 PM   #3
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Mine only goes through one stage DI. I think that`s all you need also. Moving this to General Hardware and equipment discussion forum.
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Old 01-13-2009, 08:53 PM   #4
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thats the second recommendation for an aquasafe ive seen in two days thats a good price too.
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Old 01-13-2009, 08:53 PM   #5
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Mine has a 3x but I only run one at a time. For me (and my water) that's all I need. Which means when I bought it I had 2 extra DI cans laying around.

I run 250-ish out the tap, 0 out the filter with one DI can
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Old 01-13-2009, 08:56 PM   #6
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im basically looking for tank bred discus paramaters (i posted in the saltwater section caues i know you reefers know way more about RO/DI than us planted guys ) my tap pH is about 7.6 and gh and kh are both less than 10 so im looking for something around 7.0 and less
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Old 01-21-2009, 09:22 AM   #7
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I got mine from eBay work great BRS

5 stage 75 GDP Reverse Osmosis System Aquarium RO/DI - eBay (item 360124759704 end time Jan-24-09 08:00:37 PST)
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Old 01-21-2009, 02:48 PM   #8
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The 7th stage in the first one is a waste. It has a GAC ffilter after the DI. You can't get better than DI so what is the GAC doing at that point.

Also, the 100gph membrane is usually only rated at 90% rejections vs. 99% for the 75gpd or the 150gpd membrane (at least for the Filmtec ones that I've seen).

AirWaterIce does not reccomend using a DI with the 100gpd because of the lower rejection rate. I ran mine that way for 3 years before switchng to the 150gpd membrane.
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Old 01-21-2009, 10:44 PM   #9
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