Sorry but the way your OP was worded led me to believe that you had moved stuff over to the big tank.... What percentage of the rock from the nano did you move?.... In a smaller tank removing any rock will put a dent in the tanks denitrifying capacity.... A swing from 0 (if that's where the tank was before you moved the rock) to ten could certainly be too much for the shrimp to handle
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260g mixed reef, 105g sump, water blaster 7000 return, Bubble King SM 300 skimmer, Aqua Controller Jr, 4 radions, 3 Tunze 6055s,1 tunze 6065, 2 Vortech MP40s, Vortech MP20, Tunze ATO, GHL SA2 doser, 2 TLF reactors (1 carbon, 1 rowa). http://www.canreef.com/vbulletin/showthread.php?t=50034 . Tank Video here http://www.vimeo.com/2304609 and here http://www.vimeo.com/16591694
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