Thank you for the compliment. 
I have a piece of glass behind the foam background.  If not, I don't think the foam can sustain the water pressure. 
I cut out the strainers myself.  
If the styrofoam is not sealed, make sure you apply many coats of epoxy resin. 
I only applied a thin layer.  I found that something has been scraping of my background.  Either the snails, hermits or just the saltwater itself doing the damage. 
I recently moved the tank from my bedroom to the living room and added a skimmer.  I will update some picctures later one when I have time. 
		
	
		
		
		
		
		
	
		
		
	
	
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