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					Originally Posted by mseepman  Take a look at getting the Silicate buster DI cartridges for your RO system.  I think reefsupplies.ca on here sells them. | 
	
 I have a DI unit connected to my RO unit (its one of the aquasafe ones), but I've been told that the membrane only removes silicates for a short period of time then doesn't work as well against silicates, but works fine against everything else. The unit has only been running for about a month.