I finally bit the bullet and bought a Apex Neptune 832 with the trident, the doser and the DDR.   I got a good package deal on eBay and couldn’t resist it.  So here’s my question: Do I have to use the DDR to store my alk and calcium?   Is the DDR any better than using normal alk and calcium containers?  I really don’t have space for the DDR unless I leave it next to my tank in plain view of everything.  
Thanks
	
		
			
		
		
	
			
			Thanks
 
					
				
 
 
		