Tank sizes?

[NakeraSterling]

Why is it so important to have such a large tank?? I keep reading a minimal of 75gallons. Is it possible to keep an octo in a smaller tank, since space is an issue for me? Thank for the replies and help ^.^

Also, how would a seahorse fair inside a tank with an octo?

 

[NakeraSterling]

Jeeze, I feel stupid!! I'm sorry, I put this in the wrong subforum!! I have it reposted in the right sub now >.