I am going to mainly keep cuttlefish to begin with, but eventually i want a octopus. I have a overflow box, and about 6 holes in the top of the tank excluding the large lid holes. What is the best way to octoproof this tank. THe water level is down aboutid say an inch from the top of the tank. It is not rimless. I will show pics of the holes i am concerned about also. I thought about also keeping an octopus shortly after things in the 75 get cycled and settled for alittle bit. That all depends on me making up my mind on what i want more/ availablility. From my understanding you can get an octopus at just about anytime you want, and you could be on a waiting list for Cuttlefish I am currently setting this tank up for Cuttles right now, but i always wanted both. So alternating is the option. Soon this will be the only tank i will have set up besides hopefully a biocube strictly for coral prop.. I might try to squeeze 1 cuttle in there or a dwarf octo though we will see !!! Also any segestions as to what species would be great? Its a 75 gallon long.. you can view pics here if you do not already know about it. http://www.tonmo.com/forums/showthread.php?22261-Tank-is-operational!! I would like a species i will be able to see a decent amount if possible, and one i could interect with and give frozen food as a alternative food source. I was thinking Bimac? But i could be completly wrong. I have done more research since i joined the forum on Cuttlefish, rather than Octopus.