I really want porcelain crabs in my tank but they don't seem to survive. 
 
I tried one from big als first,   
after the drip for 3 hours it died within about 2 hours of being in the tank 
 
then on my second attempt i bought 3 thinking it was maybe an unlucky crab and dripped for longer.  One died in the drip chamber, the other two died after about 2 days. 
 
definitely something abotu my water conditions that is killing the crabs.   
 
I'm gonna invest in a slew of new test kits to get a better idea of what's going on with my tank. 
		
	
		
		
		
		
		
	
		
		
	
	
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