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			 Some companies like ZEOvit sells specialized food just to feed sponges so that the sponges thrive and can take out excess nutrients from your tank :-)  In other words, people generally want them to grow lots :-) 
		
	
		
		
		
		
			
		
		
		
		
	
		
		
	
	
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			#2  
			
			
			
			
			
		 
		
		
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			 That's what I use to take out dissolved organics I actually take sponges like the common yellow/pink ones and grow them in my small frag tank on the gravel then I place them behind my frag D.T's rock work it replaces my skimmer because I do regular 10% weekly water changes and have a small fish load 
		
	
		
		
		
		
		
		
			but some sponges like the ones that grow long arm's I purposely take out I'm not sure what pineapple sponges are thou never heard/seen them Last edited by phyto4life; 11-13-2009 at 04:25 PM.  | 
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			#3  
			
			
			
			
			
		 
		
		
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			 look like this 
		
	
		
		
		
		
			http://www.mikesreef.com/images/crit...tchhiker14.jpg 
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	Biocube 29 est 05/05/08, Koralia 1, 30lbs live rock, ,yellow tail blue damsel, pair cinnamon clowns, baby snowflake eel,Toadstool , metallic green mushroom, assorted zoos , kenya treen 180gall display, 190 pds live rock, virgate rabbitfish,bluejaw trigger, bubblletip anemone,yellow tang, sailfin tang,melanarus wrasse, cloud wrasse, ![]()  | 
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			#4  
			
			
			
			
			
		 
		
		
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			 totaly safe I get them usualy growing in pipe's 
		
	
		
		
		
		
		
	
		
		
	
	
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