Due to space problems inside my house and the unreliability of octopus species in the fish trade, I have been searching for alternate methods, and after visiting the Marine Biological Laboratory, I think I have found an answer. Their temperate species were kept in tanks that were semi outside, under a shelter. So I have thought about setting up a cool temperate tank system for Eledone cirrhosa in my garage, using a very large, non metal tub. The substrate will be fine sand, with added kelp and rocks. The tank will be firmly covered in a transparent plastic, with fluorescent lighting during the day for the algae. A tank containing shore crabs, Carcinus puber will be implemented to provide food. In winter temperatures get down to 34F minimum, but with a heater I will keep the temperature at around 52F. What do you think about this arrangement?