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Old 12-17-2004, 11:19 PM   #1
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how often do you change filters in your RO/DI?

i was just wondering how often you folks are changing your filters on the RO/DI unit?
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SW - 75 gal
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48in Coralife 4x65 watt PC
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Approx. 200lbs Sand (3-4" DSB)
RO/DI unit - 110 GPD

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Old 12-18-2004, 12:20 AM   #2
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I change the sediment and carbon about every 6 months. I'm on well water here so the worst thing I'm getting is some mud in the sediment filter after a heavy rain. I change the RO once per year. I monitor my TDS and change the DI when I notice a rise in TDS readings. YMMV.
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Old 12-18-2004, 11:05 AM   #3
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It really depends on your source water and how often you use it. Once your TDS starts to climb in your filtered water it may be time for a change. You can get a TDS meter pretty cheap. Once your level gets above 25 or so you may want to consider changing.
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Old 12-18-2004, 08:32 PM   #4
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thanks loganj & lando... makes sense that the TDS should be the deciding factor. i will ask santa for one!
__________________
SW - 75 gal
Amiracle SL-350 Wet/Dry (no bio-balls)
AquaC EV-180 Skimmer w/Mag 7
2ea Maxi-Jet 1200 & 2ea Maxi-Jet 900 PH
Captive Purity Refractometer w/Calibrator
LCD Digital 250 W Titanium Heater
48in Coralife 4x65 watt PC
Won Pro Heat II
Tunz level alarm
Approx. 200lbs Sand (3-4" DSB)
RO/DI unit - 110 GPD

Please feel free to advise me!
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