Well I have had my Kent ro/di unit for about 2 year's now I guess.  I recently just had to replace the DI cartride part of the unit.  I replace the Prefilter and carbon every 6 months religiously.  
After filling the 230 I replaced all 3 parts (prefilter,carbon, di) cartridge.  The DI cartridge has allready started changing color and it's about 1/2 and inch up now.  This concernes me as the origional DI cartridge lasted 2 year's before it was color changed up to the top. 
What's up with this?
Is it time for a new membrane?
Is there anyting to do to the old membrane to restore it somewhat?
I have been restricting the output waste water from the membrane for the past few month's to not waste so much water.  so I cut it to about 1/4 of the output and make sure I flush the membrane more often(like 2 times a week).
some insight would be helpful. 
Thanks 

 
		
	
		
		
		
		
			
				__________________
				No matter what the morrow brings, inventors keep inventing things.
-----------------------------------
Jonathan
-----------------------------------
  
www.cakerybakery.ca