There are four 1.5 and one 2 gallon containers filled with Grodan grow chunks that the 4x4” cubes are sitting on top of.So what is in the buckets underneath the blocks? Could you get away with just a 6 inch block in a drip tray?
Just playing around with different rock wool options. Lol
 
	 
			
		
		
		
	
	
			
		 
			
		
		
		
	
	
			
		 
			
		
		
		
	
	
			
		 
 
		 
			
		
		
		
	
	
			
		 
 
		 
 
		