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			 I'm wanting to do a WC soon, but my hydrometer (IO) is out of wack!  It's been holding fresh water (from the tap) over night, and still reads all the way to the top.  No little air bubbles that I can see.  Tried it on my FW tanks w. same result. 
		
	
		
		
		
		
			Is it hooped? What's a refractometer go for? TIA 
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	Jason M.  |