Mar 29, 2017 #1 RMS18 I keep water chemistry as my hobby View Badges R2R App User Article Contributor NJRC Member My Tank Thread Joined Aug 21, 2015 Messages 2,996 Reaction score 2,156 Location The Shore Rating - 0% 0 0 0 Check this out http://news.nationalgeographic.com/2017/03/sea-sapphires-squid-glowing-turtles/