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Old 06/30/2010, 09:56 PM   #1
lanshark
It's Landshark, aka SNL
 
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Join Date: Sep 2006
Location: California
Posts: 359
TDS suprise?

Got a new TDS meter and Surprise Surprise ......

Water from unfiltered source (IN) appx 409ppm....
Water out of fifth stage DI unit appx 395ppm ..

I'll do a full replacement of all pre-filters and add new membrane and DI filter.

What is the average life span of the membrane in particular?

Don't think I've ever replaced the membrane in past four years.

What effect does water with TDS readings of 400ppm have on a reef tank ?



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