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#3
03-03-2009, 05:48 PM
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Looks like you have put some thought into this.
Understand the difficulties in measuring phosphates and as doesn't seem the media itself in indicating (such as with types of DI resins) that's why I'm wondering on a method to determine when to change the media. Do people normally just change out based on time similar to if running carbon (~6 wks)? 
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