just did a quick skim through your thread,  Thought i would chime and and say that the ph probe that came with my rke was screwed up.  Da replaced it, however I wouldnt waste my time anymore with them, and have been using pinpoints with the system ever since.  
 
Also the sl2 unit, has been almost ready for a few years now, ive given up on it. 
		
	
		
		
		
		
			
				__________________ 
				Two clownfish were in a tank. One says to the other, how do i drive this thing?
			 
		
		
		
		
	
		
		
	
	
	 |