i may have  2 pounds of rubble in there. i have about 40 pounds in the display. the bubbles can be from air trapped in the sponge. i know its hard but you need to try and squeeze the air out of the sponge while its underwater. whould only take a day or so for the air to work its way out via watermovement. i just went to my LFS and asked if i could take some rubble. just grabbed some stuff out of the bottom of the LR bin. 
		
	
		
		
		
		
			
				__________________ 
				72 Gallon Bowfront Reef.. Hardware:2x250w Luminex Elite HQI Reflectors (Phoenix Hexarc Bulbs), Galaxy 2x250w Electronic ballast, Euroreef 130 Skimmer, Sedra KSP 7000 Retern... Live Stock: Pair of Hawaiian Flame Wrasse, Leopard Wrasse, Pink Streaked Wrasse, Pair True Percula Clowns, Potters Angel, African Flameback Angel, Orange Fin Tomini Tang, Yellow Assessor, Tailspot Blenny, Purple Firefish..  
 
45 G FW  Asain Barb Community tank. 
 
			 
		
		
		
		
	
		
		
	
	
	 |