Lucky you for sure.
But for a new guy starting out, clean slate, given these 2 options -- the odds are heavily against you for suggesting an external overflow.
It's pretty much impossible for a drilled overflow to fail.  It's purely run on gravity.  An external overfly needs to defy gravity to get a syphon going.  It's really a no brainer.
You're lucky yours restarts everytime, but the chance is still there that one day it wont.
Plus drilling is cheaper than spending $100-200 on an external overflow.
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					Originally Posted by  gobytron
					 
				 
				LOL... 
My friend, I live in no such fear. 
You must have one of those CPR units...lol 
 
Go with a Life Reef or similar. 
 
Again, 6 years, no breaks in siphon, no floods and probably 100 power outages . 
			
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