View Single Post
  #2  
Old 01/08/2008, 10:38 AM
Randy Holmes-Farley Randy Holmes-Farley is offline
Reef Chemist
 
Join Date: Apr 2001
Location: Arlington, Massachusetts
Posts: 52,068
Was their any feeeding while you were away?

Was there any power failure?

What does "Am less than 20ppm" mean?
__________________
Randy Holmes-Farley