So is there a difference in Eco bricks, bio bricks, and envi bricks? Or are these all just general terms to describe one product?
If they are different, which is better? With such a small firebox, my main concern is extending burn times as much as possible.
	
		
			
		
		
	
				
			If they are different, which is better? With such a small firebox, my main concern is extending burn times as much as possible.
	
	![[Hearth.com] New Guy; forced into burning for primary heat. [Hearth.com] New Guy; forced into burning for primary heat.](https://www.hearth.com/talk/data/attachments/137/137523-fa53e9ebea1f55dd24af474545c2c4ec.jpg?hash=UcL5TJ2MOk)

		