Cool story about a fish discovered at 26,715 feet, a "snailfish", perhaps. Very interesting video, too.
http://www.washingtonpost.com/news/speaking-of-science/wp/2014/12/19/ghostly-new-fish-discovered-at-record-breaking-depths/?tid=pm_pop
I'm not great with planted tanks, but I like keeping plants in with my discus. I've always had trouble keeping the plants rooted in my substrate. I know its not very thick, so I'm trying to find out the ideal depth to build it up to. Also, how do you actively manage keeping such a deep bed...