I have an old 36 gallon bowfront in my basement that hasnt been treated with copper and have been wanting to turn it into an octopus tank. I know i dont want mercs because they arent interactive and are nocturnal. What should i do? Would an aculeatus be comfortable in that size tank? If not what are my octo options. I definitely dont want to get a species that will require me to upgrade down the road because i just dont have that kind of money.