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			 I agree with a couple suggestions 
		
	
		
		
		
		
			
		
		
		
		
	
		
		
	
	
	Short of replacing the back pane, you'll need to drill the crack at it's end to stop it travelling Then silicone a square of glass over the inside of the hole Whatever you do, looks like you're pulling your sump out ( again )  | 
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			#2  
			
			
			
			
			
		 
		
		
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			 Im going to try Dave's suggestion without drilling the crack, unless someone here knows how to.  As the crack is on the outside, assume the silicone glass will go on the outside as well?  I can't pull the sump out, everything will need to be done where it is.  If the sump has to be removed, I'll shut the tank down altogether. 
		
	
		
		
		
		
			
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	My 180 GL Reef Tank http://www.canreef.com/vbulletin/showthread.php?t=81842 My 55 GL Reef Tank - shut down http://www.canreef.com/vbulletin/showthread.php?t=87764  | 
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			#3  
			
			
			
			
			
		 
		
		
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			 Maybe Dave means the added piece would help to stop the glass from bowing out and allowing the crack to spread more easily ? 
		
	
		
		
		
		
			
		
		
		
		
	
		
		
	
	
	Otherwise I see no benefit to it without drilling Maybe he could explain it a bit more ?  | 
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			#4  
			
			
			
			
			
		 
		
		
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			 If he doesn't explain here, I'll call the shop tomorrow and see what can be done. 
		
	
		
		
		
		
			
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	My 180 GL Reef Tank http://www.canreef.com/vbulletin/showthread.php?t=81842 My 55 GL Reef Tank - shut down http://www.canreef.com/vbulletin/showthread.php?t=87764  | 
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			#5  
			
			
			
			
			
		 
		
		
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			 I just felt it again and it starts right in the corner at the bottom.  What the heck would cause this?  When my skimmer crapped out, I was able to deal with it without moving the sump.  It hasn't moved in a year and a half. And there's nothing behind the sump except wires.   
		
	
		
		
		
		
			Just perplexed.... 
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	My 180 GL Reef Tank http://www.canreef.com/vbulletin/showthread.php?t=81842 My 55 GL Reef Tank - shut down http://www.canreef.com/vbulletin/showthread.php?t=87764  | 
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			#6  
			
			
			
			
			
		 
		
		
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			 If I were you I will replace it and add extra foam underneath. This way I can get a good sleep. 
		
	
		
		
		
		
			
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	Wow! That's Crazy! Why would you spend that much and go through all that trouble?  | 
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			 So how is it going? 
		
	
		
		
		
		
		
	
		
		
	
	
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			#8  
			
			
			
			
			
		 
		
		
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			 I don't have any experience with stop drilling glass, but that just seems like asking for more trouble to me, especially if you have to do it in situ. How would you cool the bit? Trying to stop drill could easily make matters worse? The run might really take off? 
		
	
		
		
		
		
			Hate to say it, but that run looks nasty & I would not trust it. 
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			Mike 77g sumpless SW DIY 10 watt multi-chip LED build Last edited by mike31154; 09-04-2013 at 03:38 AM.  | 
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