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#1
11-13-2010, 08:03 PM
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Ro High TDS Help
Well just changed my pre filter, carbon and di resin and the tds reading shot to 38 let is run for a few hrs and its still there. Does it usually go up this long. Or do i need a new ro membrane.. It was only at 5 ppm before i changed them but i noticed a but of cayno.
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360 gallon sps reef, 180 gal sump, bubble king supermarine 300, 4xmp40Wes, 2 x 6215 tunze waveboxes, 4 ghl mitras 360 Reef Tank 
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#3
11-13-2010, 10:23 PM
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well i just went back and looked it took 4 hrs of running to bring it to 0 weird it is usually minutes.
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360 gallon sps reef, 180 gal sump, bubble king supermarine 300, 4xmp40Wes, 2 x 6215 tunze waveboxes, 4 ghl mitras 360 Reef Tank
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#4
11-13-2010, 10:37 PM
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That's weird. When is the last time you checked the calibration of your TDS meter? Probably not your problem, but a good thing to check.
Hillegom, DI resin will only take out 20 ppm TDS.
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#5
11-13-2010, 10:46 PM
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Never how do u check that ?? Ps i have cut your montis send me a pm well chat.
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360 gallon sps reef, 180 gal sump, bubble king supermarine 300, 4xmp40Wes, 2 x 6215 tunze waveboxes, 4 ghl mitras 360 Reef Tank
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#7
11-15-2010, 11:50 PM
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Quote:
The DI is the last filter and will take out whatever it receives. The more tds the DI gets, the faster it will be depleted. Thats why you use the RO filters to take out most of the tds. I have looked for the original article where I learned this but have been unable to find it. But I did find this: http://www.airwaterice.com/category/z.2/ Read down to Can a DI Cartridge be used as a standalone?
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