Thread: Reef Crystals - The results are in...
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  #60  
Old 01/09/2008, 10:51 PM
Mr. Ugly Mr. Ugly is offline
Ugly fishes need love too
  
Join Date: Jan 2005
Location: CA
Posts: 2,884
.8*425+.2*320=404

also

375=y*320+(1-y)*425

y=48% water change to get to 375