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Old 02-20-2005, 10:32 PM   #1
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RO/DI Recommendation

Hi all,

I am shopping for an RO/DI system. I would like some opinions on which product I should purchase. I will be doing roughly 50 gallon water changes so I would like a 50 gpd system. I am pretty sure I also want a 4-stage system as well.

Thanks,
Pete R.
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Old 02-20-2005, 10:47 PM   #2
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I just ordered a 4 stage system from captivereefs.com -- $199.00 minus the 6% AA discount.

The "barracuda" model is rated at 100 gal per day (always nice to have a little wiggle room in case of emergencies)
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Old 02-20-2005, 11:42 PM   #3
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That's the one I would suggest. The Barracuda has options such as an inline TDS meter and a built in pressure gauge that you won't find on other units. Aqua FX also has excellent customer service. I've sold a bunch of them and have never had any problems with any of them.
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Old 02-20-2005, 11:46 PM   #4
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agreed. Plus its made in the good ol' USA! If you have a problem you can talk to the people who put it together for you!
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Old 02-21-2005, 01:25 AM   #5
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Don't forget that the gpd means 24 HOURS at 50#+ pressure at x degree temp. Get the 100GPD. My city water comes out the tap at around 50psi but right now it's so cold it takes forever to make a 15 gallon batch (well around 8 hours anyway). It's rated at 100gpd and works much faster the rest of the year when the water temp is higher. I don' want to run tepid water through it cause who knows what lurks in the water heater (metals).
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Old 02-22-2005, 08:37 PM   #6
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Thanks for the replies on my post. One other consideration should be replacement of cartridges. How often are they needing replacement and what does this translate into cost?

Thanks,
Pete R.
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450g Acrylic FOWLR
380 lbs. of Live Rock
1 Yellow Tang, 1 Mono, 1 Blue Angel, 1 Foxface Lo, 1 Lunare Wrasse, 1 Snowflake Eel

1x Dolphin AS2100
1x Dolphin AM4700
72" Aqualight Pro: 4x96 Actinic, 3x150 HQI Halides, 4x1 moonlights
AquaC EV-1000 Protein Skimmer run by Dolphin AS2100
AquaUV 114 watt UV Sterilizer
2x Jager 250w
...Work in progess.....
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Old 02-23-2005, 12:02 AM   #7
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All depends on how much water you make and how dirty the source is. I make about 10gallons a week for top off and 30 gallons a month for water changes. My tap water is about 180-225 tds. I use about 6 filters, 2 carbons and 3 DI cartridges per year.
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Old 02-23-2005, 12:45 AM   #8
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here is how good the membrane in AquaFX barracuda is. I make 40-50 gallons a week for my service accounts. My membrane and all filters including the DI are over a year old. I changed them last week end and still had a TDS of 1 my tap water has a TDS of 217. That is with 1 year old prefilters and DI resin. You do get what you pay for in this hobby.
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Old 02-23-2005, 12:46 AM   #9
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Is anyone using an auto-shutoff float on their AquaFX Barracuda? If so, was it provided by AquaFX? Otherwise, where did you get it?

Thanks,
Pete R.
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450g Acrylic FOWLR
380 lbs. of Live Rock
1 Yellow Tang, 1 Mono, 1 Blue Angel, 1 Foxface Lo, 1 Lunare Wrasse, 1 Snowflake Eel

1x Dolphin AS2100
1x Dolphin AM4700
72" Aqualight Pro: 4x96 Actinic, 3x150 HQI Halides, 4x1 moonlights
AquaC EV-1000 Protein Skimmer run by Dolphin AS2100
AquaUV 114 watt UV Sterilizer
2x Jager 250w
...Work in progess.....
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Old 02-23-2005, 12:51 AM   #10
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The barracudas come standard with an autoshut off and built in pressure gauge. I also throw in a TDS meter on mine.
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