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			#1  
			
			
			
			
			
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|  Drilling a tank. Hey everyone.  I have a 48" x 12" x 18" tank sitting empty in the house, and thought I would finally get it up and running.  How hard would it be to drill it for an overflow or two and a return?  I wanted to use a sump on this tank and it needs some prep.  Is this something I can do at home with the right tools?  Should I take it to a glass shop or tank maker to get it done? | 
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			#2  
			
			
			
			
			
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|   I drilled mine recently and is was easier than I expected. Just go slow and make sure your drill has a clutch and is set really low so the bit won't bind up. Take it slow and let the bit do the work. Build a dam around your holes with plumbers putty or something to keep water around the bit for lubrication. I ordered my bits from mops.ca and it worked well for a couple holes. Probably wouldn't get more than a couple holes out of it though as they are fairly inexpensive. And make sure to catch the glass disk so it doesn't fall and break the glass. | 
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			#3  
			
			
			
			
			
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|   Quote: 
 I agree. I have now drilled 7 holes with my bit and is very simple. Just make sure you aren't drilling into tempered glass | 
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			#4  
			
			
			
			
			
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|   The tank you have is 48x12x18 which sounds like a standard 55gal which are usually fully tempered, so I don't think drilling is an option for you. | 
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			#5  
			
			
			
			
			
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|   Quote: 
 Is there a way to find out if it uses tempered glass or not? | 
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			#6  
			
			
			
			
			
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|   there are a few ways the two easiest ways are: 1) call manufacturer and ask 2) use two polarizing filters, place one on each side of the glass and look through them, turn the filters. If it's tempered you will see a kind of mesh pattern of lines, if it's not tempered it will be clear. |