BRS extra thick glue.  Shut down powerheads for 5 minutes and it usually holds long enough for things to encrust.  I also use pegging method (search YouTube) and it works great. 
		
	
		
		
		
		
			
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				Mark...
  
290g Peninsula Display, 425g total volume.  Setup Jan 2013.
			  
		
		
		
		
	
		
		
	
	
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