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					Originally Posted by  bkelly
					 
				 
				I just had a big crash and lost all my SPS after re siliconing my sump and letting it cure for  over 24 hrs using the same  GE  II silicone. I am  not certain it was the silicone  or just a kill from having to pull my sump for  2-3 days  but all my SPS except  2 pieces died  my LPS suffered but not as bad.   I had done reading on line and found most  posts were saying THE Blue/white tube  of GE silicone II was reef safe.  Either way killed everything.   
I put   tons  of carbon in my reactor and did water changes till the town was out of salt - for the first  few  weeks i was changing   nearly daily as much as i could do.  ITs been  2 months  i guess, the tanks better, and starting to support itself with  less water changes.  And its supporting SPS again.  
If your seeing signs  id frag whats still alive  best you can  and that into a diff system to hopefully have something  left  , . 
My crash drug on for a weeks  thats what  leads me to think  it was  poisoned.  Nothing survived it , my parameters werent  out of wack  from what i could recall although you could smell the death. 
Hope you dont get it as severe  but if you want to be safe id recommend doing some  quick fragging.   
All the best Brent 
			
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 What's interesting is that the reefer that helped me out (and recommended to use GE Silicone II) had a major crash after setting up his new cube tank.  He used GE Silicone II to build his cube too and he lost 90% of his livestock.  It's just now that his tank is slowly bouncing back.