I am setting up a 10 gallon planted aquarium with mainley marco algaes, and i was going to use it as a seahorse tank, but i saw an octopus at my LFS the other day and became facinated. So i was wondering is there any type of ocropus species i can keep in a basic 10 gallon AGA long aquarium? i have done my research and know to have a tight lid on top with a strong liverock structure so they wont fall. Thanks for the help!!