Don't worry Sean 
You 're doing fine ,the important thing is that you are trying to find solutions. 
one thing I like to recomend just go slow on stocking the tank ,It always pays up ,I would just be happy with the corals you have &  start to stock up in a couple months or so. 
As for the PH swingwhat is the min & max ponits? 
In what way are your corals responding to the swings ? 
		
	
		
		
		
		
			
		
		
		
		
	
		
		
	
	
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