Well it seems like 6 hours. I float the bag in the tank water for 30 minutes.  
Set up the drip line 
Place the bag with the inverts in a bucket. 
Drip the tank water in the bucket 
Seems like 6 but it is probably 4. 
 
I do this for shrimp, snails, starfish, sea hares and all other inverts. 
		
	
		
		
		
		
		
	
		
		
	
	
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