Quote:
	
	
		
			
				
					Originally Posted by  Reefer Rob
					 
				 
				My rocks are right on the glass. Under water they don't weigh that much. 
			
		 | 
	
	
 agreed.  I also have my tank on top of 3/4" styrofoam, then on a sheet of 3/4" plywood.
I have mine on reef-rack too in some parts to fill out the rock