You can also use glycerin, (called bubble counter fluid) it doesn't evaporate as fast in bubble counters that don't fill themselves. 
		
	
		
		
		
		
			
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				Brian 
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 220g inwall 48"x36"x30"
110g mangrove refug/sump
Poison Dart Frog Vivarium
			 
		
		
		
		
	
		
		
	
	
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