There is no right answer, it what ever works for you.  I used the magnum micron filter combined with the uv sterilizer and that did the trick for me.  Our tanks are different, mine was set up for 15 years before I had the dino bloom.  About 3 years ago first I had Bryopsis (for years), treated that, then immediately followed by Cyano followed immediately by dinos.  Dinos was the worst by far.   So I had a ton of things happening in my tank.   I don't want you to go out and spend a ton of money and then not have it work for you. 
 
I had to change the micron filter daily when I first started, now I change it once a week. Rinse it off, dump it in bleach (for a day), rinse well and use again.  I have several spare filters.  I still use it.  Now this is on a tank that I did not have a filter sock.  This is why I still use it. 
		
	
		
		
		
		
		
	
		
		
	
	
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