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					Originally Posted by Myka  Salifert are a good quality test kit and a bit cheaper than Elos. I much prefer the Salifert alkalinity kit to the Elos one as well. | 
	
  
+1 on the salifert kits i like using them too easy to use. i have never had any problems with them ever since using them....
I also know that a sudden drop in ALk will cause you SPS to die too... that may have been your problem too, any sudden change in Temp by chance, or PH